Search the glossary423 words

#

• 2-Step Verification (two-factor authentication, 2FA)Signing in with your password and your phone, so a stolen password isn't enoughLesson 1.1
• 404The "page not found" response, when no route matches the addressLesson 4.5

A

• A recordPoints a name to an IP addressLesson 12.1
• Accepted warningA known risk you've decided is acceptable, written down with the reason and the dateLesson 10.9
• AccessibilityPeople with disabilities can use the site: keyboard, screen reader, zoom, contrastLesson 11.9
• AccountA record of one person: email, password hash and a unique user IDLesson 9.1
• Account ownerThe person whose account it is; they can add and remove othersLesson 14.4
• Account sharingHostinger's way of giving someone access without sharing a passwordLesson 14.4
• Accounts registerA sheet listing every account for a project, its owner and who has access. No passwordsLesson 14.4
• Activity targetA target you control, like "send 5 messages", rather than a result you don't, like "win 2 clients"Lesson 13.1
• Add-onAn extra that can be added to any package, at its own priceLesson 14.1
• AgentCursor's AI, which can build, change and explain your projectLesson 1.6
• AGENTS.mdA plain Markdown instructions file many AI coding tools read. Next.js creates one for youLesson 2.7
• Agreement (contract)What you and the client have agreed about how you'll work together, in writingLesson 14.3
• AI (artificial intelligence)Software that can write, answer and create in a human-like wayLesson 0.2
• AI assistantA tool like ChatGPT, Gemini or Copilot that answers questions, including "who can build my website?"Lesson 13.6
• AllowanceThe amount of small-change time included each monthLesson 14.5
• Alt textA short description of an image, read aloud by screen readers and shown if the image fails to loadLesson 2.5
• Always ApplyThe rule type (alwaysApply: true) that's included in every chatLesson 2.7
• Apex (or root)The domain with nothing in front: kofimensah.com. www.kofimensah.com is a subdomainLesson 12.1
• APIA way for one program to ask another to do somethingLesson 8.1
• API callOne request from your website to a service like ResendLesson 8.1
• API keyA secret code that lets your website use another service as youLesson 1.7
• Arbitrary valueA class with square brackets, like max-w-[68ch], for an exact valueLesson 4.2
• ArrayA list in square bracketsLesson 4.3
• Arrow functionA short function written with =>Lesson 4.3
• Aspect ratioAn image's shape, as width to height. 16:9 is wide, like a TV screenLesson 2.5
• Attack surfaceEvery place a stranger can send something to your site or its servicesLesson 10.1
• AttributeA setting inside an opening tag, like href="/contact"Lesson 4.1
• Authentication (auth)Proving who you are, for example by signing inLesson 9.1
• Authenticator appA phone app that makes a new 6-digit login code every 30 secondsLesson 1.2
• AuthorisationChecking what you're allowed to do once we know who you areLesson 9.1
• AuthoriseGiving one service permission to use your account on anotherLesson 1.4
• Auto Confirm UserSkip the "confirm your email" step because you, the developer, vouch for the addressLesson 9.2

B

• Back endThe work behind the scenes, like saving ordersLesson 0.1
• BackupA copy of your data kept somewhere else, so an accident doesn't lose itLesson 10.9
• Backup codesOne-time codes that get you in if you lose your phoneLesson 1.1
• BalanceThe rest of the price (here, 40%), paid before go-liveLesson 14.3
• BlueprintLevel 4: adds tech, structure, mobile behaviour, states, SEO and accessibilityLesson 2.2
• Booking requestA booking the owner still has to confirm. The site asks for a time; it doesn't promise oneLesson 11.1
• Booleantrue or falseLesson 4.3
• BotA program that visits websites automatically. Some are useful (Google's), many are notLesson 10.1
• BounceAn email that couldn't be delivered, for example because the address doesn't existLesson 8.1
• BouncedThe email couldn't be delivered, for example because the address doesn't existLesson 8.5
• BranchA line of work in Git; main is the main oneLesson 1.5
• BreakpointThe screen width where a prefix starts: sm 640, md 768, lg 1024, xl 1280Lesson 4.2
• BriefA detailed prompt describing exactly what you want builtLesson 0.2
• BrowserThe program that requests and displays pages (Chrome, Safari)Lesson 0.1
• Browser validationChecks in the browser (required, min, max). Convenient, but removableLesson 6.2
• BufferExtra time built into a price for things that always come upLesson 14.1
• Bug reportA description of a bug: where, steps, expected, actual, evidence, recent changesLesson 5.3
• Build error / syntax errorThe code isn't written correctly, so it can't be read at allLesson 5.1
• Build loopChange → preview → check → commit, one change at a timeLesson 2.8

C

• .cursor/rulesThe folder in your project where Cursor looks for rules filesLesson 2.7
• Call stack (stack trace)The chain of functions that were running when the error happened. Look for your own files onlyLesson 5.1
• Call to action (CTA)The one thing you ask people to do nextLesson 13.5
• CarouselA post with several images people swipe throughLesson 13.5
• Case studyA page telling a client's story: problem, solution, resultLesson 13.6
• Case-sensitiveTreating capital and small letters as different. Vercel's servers do; many laptops don'tLesson 5.6
• ChannelWhere a lead came from: Demo, Social, Referral or SEOLesson 13.1
• ChatGPTAn AI you chat with in your browser; your planning desk and image studioLesson 1.3
• CheckpointOne place on the email's journey where you can confirm it got that farLesson 8.5
• childrenThe special prop for whatever sits between a component's opening and closing tagsLesson 4.4
• classNameJSX's name for HTML's class: where the styles goLesson 4.1
• ClicksHow many times someone clicked through to your siteLesson 12.7
• Client briefThe written plan for someone else's website: facts, pages, design and features, agreed before buildingLesson 11.1
• Client ComponentRuns in the visitor's browser so it can react to them. Marked with "use client"Lesson 4.4
• Closing tagThe tag with a slash, like </p>, that ends an elementLesson 4.1
• CloudflareA company whose network sits between visitors and millions of websites, offering DNS, bot protection and moreLesson 10.5
• CNAME recordPoints a name to another name, like a nicknameLesson 12.1
• Code blockA box in ChatGPT's answer with text that keeps its exact formatting, with its own copy buttonLesson 2.5
• Code editorA program for writing and organising code filesLesson 1.6
• Cold messageA first message to someone who doesn't know you yetLesson 13.3
• ColumnOne kind of information, with a type: name (text), quantity (whole number)Lesson 7.1
• CommandOne instruction you type into the terminal, then press EnterLesson 1.5
• CommitA saved snapshot with a short note about what changedLesson 1.2
• ComponentA reusable block of page, written as a tag with a capital letter, like <Hero />Lesson 4.1
• ComputedThe final value of each style, and the size/padding/margin diagramLesson 5.2
• ConsoleMessages from the page's code: errors (red), warnings (yellow), logsLesson 5.2
• console.logA line of code that prints a message, used while debuggingLesson 5.2
• Content logYour record of what you posted and what happenedLesson 13.5
• Content pillarA type of post you return to regularlyLesson 13.5
• ContextEverything the AI knows about your situation: what you've told it and what it can seeLesson 0.2
• Context windowThe amount of text an AI can pay attention to at once. Long chats can push early details out of focusLesson 2.1
• ConversionA lead moving to the next stage, especially to WonLesson 13.1
• CookieA small named note a website keeps in your browser, sent back with every requestLesson 9.1
• CopyThe words on a website: headlines, descriptions, button labels, pricesLesson 2.4
• CrawlGoogle's robot visiting your page to read itLesson 12.7
• CSSThe look of a page: the clothesLesson 0.1
• CSV"Comma-separated values": a plain table file any spreadsheet can openLesson 10.9
• Ctrl+CStop the command that's runningLesson 4.6
• Current folder (working directory)The folder the terminal is "standing in". Commands act hereLesson 4.6
• CursorA code editor with AI built in; it can read and change your project's filesLesson 0.2
• Custom instructionsA note ChatGPT reads at the start of every chat, so it knows who you areLesson 1.3

D

• DashboardYour control panel on a website serviceLesson 1.4
• DatabaseAn organised place to store informationLesson 0.1
• Debug modeA Cursor mode that adds temporary logging, has you reproduce the bug, and fixes it from the evidenceLesson 5.3
• Defence in layersSeveral independent locks, so one mistake doesn't open everything (Lesson 9.4)Lesson 10.1
• DeliverabilityHow likely your emails are to land in the inbox, not spamLesson 8.1
• DeliveredThe receiving email service accepted the email. Where it filed it (inbox, spam) is up to themLesson 8.5
• DemoA sample website you customise to show a potential clientLesson 0.3
• Demo noticeA line at the top of every page saying the site is a demo, by you, not the business's official siteLesson 11.1
• DependencyA tool your project needs, downloaded into nodemodulesLesson 4.5
• DeploymentOne version of your website that Vercel has put onlineLesson 1.4
• DepositThe part of the price paid before work starts (here, 60%)Lesson 14.3
• DescriptionLevel 2: adds pages and sectionsLesson 2.2
• Design tokenA named value your whole site uses, like --color-accentLesson 4.2
• Design tokensThe fixed list of colours, fonts and sizes a site is allowed to useLesson 2.2
• DestructuringUnpacking props into separate names: { title, description }Lesson 4.4
• Device modeShowing the page at phone and tablet sizesLesson 5.2
• DevToolsChrome's built-in tools for looking inside a pageLesson 0.1
• DiagnoseFind and explain the cause, before changing anythingLesson 5.3
• Disable cacheMake Chrome download everything fresh, while DevTools is openLesson 5.2
• Discard changesThrow away a file's changes since the last commit. Can't be undoneLesson 2.8
• Disk encryptionYour laptop scrambles everything on its drive, so a stolen laptop's files can't be read (FileVault, BitLocker)Lesson 10.9
• DNSThe internet's phone book: turns domains into IP addressesLesson 0.1
• DNS only (grey cloud)Cloudflare only answers "where is this site?"; visitors go straight to Vercel. What you'll useLesson 10.5
• DNS providerThe company that keeps your page of the phone book (Cloudflare)Lesson 12.1
• DomainThe name people type, like adjoaskitchen.comLesson 0.1

E

• ElementAn opening tag, its content and its closing tag, togetherLesson 4.1
• Elements panelThe page's final HTML, with the styles on each elementLesson 5.2
• Email authenticationPublic records that prove who's allowed to send for a domainLesson 8.1
• Email providerThe Supabase setting that allows signing in with email and password. Stays onLesson 9.2
• Email serviceA company that delivers emails for websites (Resend, in this course)Lesson 8.1
• EncryptedScrambled so only the right password can unscramble itLesson 1.7
• Engage firstFollowing and genuinely commenting before sending a DMLesson 13.3
• EnquiryA question about a product that may become a saleLesson 11.1
• Error messageText that appears when something goes wrong, usually saying what and whereLesson 0.4
• Error overlayNext.js's error screen in the browser during npm run devLesson 5.1
• EventOne recorded moment in an email's life: sent, delivered, bouncedLesson 8.5
• executeThe Cloudflare MCP tool that runs code against Cloudflare's API. The one you review most carefullyLesson 10.5
• Expected / actualWhat should happen / what does happenLesson 5.3
• ExportSaving a copy of data out of a service into a fileLesson 10.9

F

• Fact sheetYour list of the business's facts, each with where it came fromLesson 11.1
• FaviconThe small icon in the browser tab and on a phone's home screenLesson 11.9
• File and lineThe location an error points at, like Hero.tsx (12:7): line 12, character 7Lesson 5.1
• File tree (Explorer)The list of your project's folders and files, on the leftLesson 1.6
• File-based routingFolders inside app/ become addresses; their page.tsx is the pageLesson 4.5
• Fix periodThe time after launch when you fix anything that doesn't work as agreed, freeLesson 14.6
• Flag (option)An extra setting after a dash, like -a or --onelineLesson 4.6
• FlexLining children up in a row or columnLesson 4.2
• Folder / directoryThe same thing: a place that holds filesLesson 1.6
• Follow-upA planned, polite next message after no reply or a "not now"Lesson 13.1
• Footer creditA small "Website by…" link on a client's site, with their agreementLesson 13.6
• Foreign keyA column that points at a row in another table by its ID: orders.dishid → dishes.idLesson 7.1
• FormBoxes for a visitor to fill in, plus a button that sends themLesson 6.2
• Form dataThe parcel: each field's name plus what the visitor typedLesson 6.2
• Fragment<> and </>: an invisible wrapper that adds nothing to the pageLesson 4.1
• Free planThe no-cost version of a tool, with some limitsLesson 0.3
• Fresh chatA new conversation with no history, so old attempts don't confuse the AILesson 2.7
• Front endEverything the visitor sees and clicksLesson 0.1
• FrontmatterThe settings block between two --- lines at the top of a rules fileLesson 2.7
• FunctionNamed instructions that run when used; components are functionsLesson 4.3

G

• .gitignoreA list of files Git must never saveLesson 2.8
• GapAnything the AI needs to decide that your prompt didn't answerLesson 2.1
• GenericLooks like everyone else's; could belong to any businessLesson 2.1
• GETA request that asks for something, like a pageLesson 6.2
• GitThe tool that saves versions of your work so you can undo (you'll meet it in Module 1)Lesson 0.4
• git branch -DDelete a branch, even if its commits aren't merged anywhereLesson 5.6
• git diffShows exactly what changed, line by line: red removed, green addedLesson 5.5
• git reset --hardDeletes commits and changes. Not used in this courseLesson 5.5
• git restoreThrows away uncommitted changes to files. Can't be undoneLesson 5.5
• git restore --sourceBrings back a file as it was in a chosen commitLesson 5.5
• git restore --stagedTakes a change out of the box, keeping it in the fileLesson 5.5
• git revertMakes a new commit that does the opposite of an old one. Safe after pushingLesson 5.5
• git switch -cCreate a new branch and switch to itLesson 5.1
• GitHubA website that stores your code projects and their history onlineLesson 1.2
• Go to DefinitionCmd/Ctrl-click a name in Cursor to jump to the file where it's madeLesson 4.1
• Go-liveThe moment the site goes public on the client's own domainLesson 14.3
• Going in circles (loop)The AI trying fix after fix that don't work, often repeating itselfLesson 5.4
• Google promptA "Is it you?" message on your phone that you tap to approve a sign-inLesson 1.1
• Google Search ConsoleGoogle's free tool showing how your site appears in Google SearchLesson 12.7
• GridArranging children in columnsLesson 4.2
• Guest checkoutOrdering without an account, as Adjoa's customers doLesson 9.1

H

• HallucinationWhen an AI states something false with confidenceLesson 0.2
• HandoverThe moment planning becomes building: a saved brief and image files Cursor can readLesson 2.5
• HashA password run through a one-way scrambler; it can be checked but never reversedLesson 9.1
• HEADWhere you are now in your Git historyLesson 4.6
• Health checkA regular test that the site, forms, emails and accounts all workLesson 14.5
• HeroThe first big section of a page, with the main headline and buttonLesson 2.2
• Hero imageThe main image in the first section of a pageLesson 2.5
• Hex codeA colour written as # plus six characters, like #A8321E. The exact way to name a colour for a websiteLesson 2.4
• Hobby planVercel's free plan, for personal, non-commercial sites: everything you build while you learnLesson 1.4
• HookA React tool whose name starts with use, like useState. Only works in Client ComponentsLesson 4.4
• HostingRenting space on a server (Vercel is your host)Lesson 0.1
• HTMLThe content and structure of a page: the skeletonLesson 0.1
• HTTPSA secure, encrypted connection; shown by the padlockLesson 0.1
• HypothesisA possible cause, to be testedLesson 5.3

I

• Image promptA description of the picture you want: contents, light, feeling, angle, what to avoid, shapeLesson 1.3
• Import / exportUsing something from another file / sharing something with other filesLesson 4.3
• ImpressionsHow many times your site appeared in someone's search resultsLesson 12.7
• in:anywhereA Gmail search word that includes Spam and BinLesson 8.5
• IndexGoogle's giant library of pages it can show in resultsLesson 12.7
• IndexedGoogle has a copy of the page and can show itLesson 12.7
• InitialiseTurn a normal folder into a Git repository (git init). create-next-app does it for youLesson 2.8
• InstrumentationTemporary logging code added to collect evidence while the app runsLesson 5.3
• Interview promptA prompt that asks the AI to question you, one question at a time, before it writes anythingLesson 2.5
• Invented businessA realistic made-up business for practice, labelled as invented on the siteLesson 11.1
• InvoiceA request for payment, with a unique numberLesson 14.3
• IP addressThe numeric address of a server, like 76.76.21.21Lesson 0.1

J

• JavaScriptThe behaviour of a page: the musclesLesson 0.1
• JSXHTML written inside JavaScript. The format of your .tsx filesLesson 4.1

K

• keyA unique name tag on each item made by .map()Lesson 4.3

L

• layout.tsxA frame around pages; app/layout.tsx frames the whole siteLesson 4.5
• LeadA business that might become a clientLesson 13.1
• LeakA secret ending up anywhere other than .env.local, Vercel or your password managerLesson 6.5
• Leaked keyA secret key that has been somewhere other than .env.local, Vercel or your password managerLesson 10.1
• Leaked secretA password or key that ended up somewhere it shouldn't; fix it by changing itLesson 1.7
• LighthouseChrome's built-in checker for speed, accessibility, best practices and search basicsLesson 11.9
• LLM (large language model)The type of AI behind ChatGPT and Cursor; it predicts the next piece of textLesson 0.2
• LogA running record of what a program did and what went wrongLesson 8.5
• Loop summaryA short list of what was tried, what isn't the cause, and the best guessLesson 5.4
• Lorem ipsumFake Latin filler text that designers use as a placeholder. Never acceptable on a finished siteLesson 2.4
• Lost reasonWhy a lead said no, written down so you can learn from itLesson 13.4
• LTSLong-Term Support: the stable version to chooseLesson 1.5

M

• .map()"For each item in this list, make this": turns a list into cardsLesson 4.3
• .mdcThe file ending for Cursor rules: Markdown with a settings headerLesson 2.7
• @-mentionTyping @ in the chat to attach a file, folder, past chat or other context to your messageLesson 2.7
• Maintenance plan (care plan)A monthly service that keeps a website safe, working and up to dateLesson 14.5
• MarginSpace outside an element, pushing others away (m, mt, mx-auto)Lesson 4.2
• Markdown (.md)Plain text with a few symbols for headings and bullets. Readable by people and AI alikeLesson 2.4
• Master identityThe one account you use to sign in to all your work toolsLesson 1.1
• Master passwordThe one password that unlocks your vaultLesson 1.7
• MCPA way to connect AI to your tools so it can work inside them for youLesson 0.3
• MCP server / toolThe connector a service provides, and the actions it offers the AILesson 7.1
• MemberSomeone invited into an account with their own login and limited rightsLesson 14.4
• MemoryFacts ChatGPT saves from your chats; you can view and delete themLesson 1.3
• Micro-influencerA creator with a smaller, trusted audience in a city or a nicheLesson 13.5
• Mobile firstClasses with no prefix are for phones; prefixes like md: take over on bigger screensLesson 4.2
• ModeHow much the Agent may do: build (Agent), only answer (Ask), or plan first (Plan)Lesson 1.6
• ModelThe AI "brain" behind the Agent; Auto picks one for youLesson 1.6
• Model pickerWhere you choose which AI model Cursor usesLesson 5.4
• Module not foundAn import points at a file or package that doesn't existLesson 5.1
• MX recordSays which mail server handles email for a nameLesson 12.1

N

• NameserversThe computers that answer DNS questions for your domain. Set at the registrarLesson 12.1
• NestingElements inside other elements, like boxes inside boxesLesson 4.1
• Network panelEvery request the page makes, with its status, size and timeLesson 5.2
• next.config.tsNext.js settings for the projectLesson 4.5
• next/imageNext.js's image component. It sends each visitor a version of the image sized for their screenLesson 2.5
• Node.jsThe program that runs JavaScript on your laptop, so your website can be built and previewedLesson 1.5
• Noreply emailA private address from GitHub, used on your commits instead of your real emailLesson 1.5
• Not nowInterested but not ready; has a follow-up dateLesson 13.4
• Notice periodHow long before stopping a plan you must say soLesson 14.5
• npmComes with Node.js; downloads ready-made code packages for your projectLesson 1.5
• npm installDownload the tools listed in package.jsonLesson 4.6

O

• OAuthThe "sign in and click Authorize" way of giving one app limited access to another, without sharing your passwordLesson 10.5
• ObjectOne thing described by name: value pairs in curly bracesLesson 4.3
• object-fit: coverA CSS setting that makes an image fill its box without stretching, trimming the edges if needed. In Tailwind it's the class object-coverLesson 2.5
• ObjectionA reason someone gives for not buying yet, often a question in disguiseLesson 13.4
• OffboardingEnding the relationship cleanly: data, code and access handed overLesson 14.4
• One-page proposalA short proposal for a small job the client has already decided onLesson 14.2
• Open databaseA database whose rules let strangers read or change data they shouldn'tLesson 10.1
• Optional (?)A property that may be left outLesson 4.3
• origin/mainThe last commit GitHub has, on the main branchLesson 4.6
• OutreachContacting businesses that haven't contacted youLesson 13.3
• Owner's guideA short, plain-English manual for the clientLesson 14.6

P

• PackageA bundle of ready-made code someone else wrote, that your project can useLesson 1.5
• package.jsonThe project's shopping list (dependencies) and shortcuts (scripts)Lesson 4.5
• PaddingSpace inside an element, between its edge and its content (p, px, py)Lesson 4.2
• page.tsxThe file that makes a page for its folder's addressLesson 4.5
• PagerA one-screen-at-a-time viewer; press q to leaveLesson 4.6
• PageSpeed InsightsGoogle's online version of Lighthouse, testing a simulated phone on mobile dataLesson 11.9
• Paid partnershipA post someone is paid to make, labelled so viewers knowLesson 13.5
• PanelOne tab of DevTools: Elements, Console, Network…Lesson 5.2
• ParameterAn input a function receives, in its round bracketsLesson 4.3
• PasskeyA way to sign in with your fingerprint, face or screen lock instead of a passwordLesson 1.1
• PassphraseA password made of several random words; long, strong and memorableLesson 1.7
• Password managerAn app that stores all your passwords in a locked, encrypted vaultLesson 1.7
• Permission-firstAsking before sending a link, file or pitchLesson 13.3
• PersonalisationWriting something specific to that business, so it's clearly not a mass messageLesson 13.3
• PipelineThe stages a lead moves through, from found to wonLesson 13.1
• PlaceholderTemporary content that stands in for the real thing, like a coloured block where a photo will goLesson 2.4
• PositionHow high you appeared, on average (1 is the top)Lesson 12.7
• POSTA request that sends something, like an orderLesson 6.2
• PostgresThe database Supabase is built onLesson 7.1
• Pre-launch checklistEverything a client and their customers would notice, checked with proof before launchLesson 11.9
• PrerenderingBuilding pages in advance, before anyone visits. Why new Date() fails the buildLesson 5.6
• Primary key (ID)A value that's unique for every rowLesson 7.1
• Problems panelCursor's list of every error and warning in your projectLesson 4.3
• ProjectA real website you build in the courseLesson 0.3
• PromptWhat you type to the AILesson 0.2
• Prompt levelHow many of the website's decisions your prompt makes, from 1 (almost none) to 5 (all of them, saved for every chat)Lesson 2.2
• PropagationThe time it takes for a change to reach everyoneLesson 12.1
• PropertyOne name: value pair in an object, read with a dot: service.titleLesson 4.3
• ProposalA document showing the client what you'll build, when and for how much, usually as three packagesLesson 14.2
• PropsInformation you pass into a component, written like attributesLesson 4.4
• Props typeThe list of props a component accepts, with their typesLesson 4.4
• Proxied (orange cloud)Visitors pass through Cloudflare's network before reaching the site. Not used for Vercel sitesLesson 10.5
• Public / privatePublic: anything in the browser, which visitors can see and change. Private: anything that stays on the serverLesson 6.1
• public folderThe folder in a Next.js app for images and files served as they are. public/hero.png appears at /hero.pngLesson 2.5
• public/Files served as they are: public/images/a.webp is at /images/a.webpLesson 4.5
• Publishable keyA Supabase key designed to be public; it can only do what your database rules allowLesson 6.5
• PushSending your commits from your laptop to GitHubLesson 1.2
• Push protectionA GitHub feature that blocks a push when it spots a secretLesson 6.5
• pwd / ls / dir / cdWhere am I / what's here (Mac, Windows) / go to a folderLesson 4.6

Q

• QR codeA square barcode your phone camera can readLesson 1.2
• Quick FixCursor's lightbulb (Cmd/Ctrl+.) that offers fixes like adding a missing importLesson 5.6

R

• Rate limitA cap on how many requests you can make in a short timeLesson 8.5
• ReactThe way of building pages from components. Next.js is built on itLesson 4.4
• Read-only modeAn MCP setting that lets the AI look but never change anythingLesson 7.1
• READMEThe note shown on your GitHub repository's front pageLesson 4.5
• ReceiptConfirmation that you received a paymentLesson 14.3
• Recommended packageThe package you'd honestly choose for this client, marked so they don't have to guessLesson 14.2
• RecordOne line in your DNS: a type, a name and a valueLesson 12.1
• Recovery codesOne-time codes that get you into GitHub if you lose your phoneLesson 1.2
• Recovery detailsYour phone number and backup email, used to prove it's you if you get locked outLesson 1.1
• Recurring incomeMoney that comes in regularly, like every monthLesson 14.5
• Red squiggleTypeScript (or ESLint) pointing at a mistake; hover to read itLesson 4.3
• RedactReplace a secret with [REDACTED] before sharing textLesson 6.5
• RedeployBuild and publish your site again, so it picks up new settingsLesson 8.5
• ReelInstagram's short vertical videoLesson 13.5
• ReferenceErrorA runtime error: the code uses a name that doesn't existLesson 5.1
• ReferralA new lead introduced by someone who knows youLesson 13.6
• Referral partnerA business that serves the same customers and recommends you (and you them)Lesson 13.6
• Referral rewardA thank-you for a referral that becomes a paying clientLesson 13.6
• Refresh tokenA second token that lets the app get a fresh session token without signing in againLesson 9.1
• RegistrarThe company you rent the domain from (Hostinger)Lesson 12.1
• Repository (repo)One project, stored with all its historyLesson 1.2
• RequestThe browser asking for one file or piece of dataLesson 5.2
• Request / ResponseThe browser asks (request), the server answers (response)Lesson 0.1
• ResolverThe "librarian" that looks up DNS answers for your phone or laptopLesson 12.1
• ResponsiveA site that rearranges itself to fit phones, tablets and laptopsLesson 2.4
• RestorePutting data back from a backupLesson 10.9
• Restore CheckpointPut your files back to how they were before a chosen message in the chatLesson 5.4
• ReviewA rating and comment the client posts publicly, for example on GoogleLesson 14.6
• RevokeDelete or switch off a key so it no longer worksLesson 6.5
• RotateReplace a key with a new one, then delete the old one so it stops workingLesson 6.5
• Round of changesOne batch of feedback from the client, which you then makeLesson 14.1
• RouteAn address on your site, like /aboutLesson 4.5
• RowOne entry in a database table: one orderLesson 6.2
• Row (record)One thing in a table: one dish, one orderLesson 7.1
• Rubber duckSolving a problem by explaining it out loud or in writing, step by stepLesson 0.4
• Rules fileA file of standing instructions Cursor adds to every chat automaticallyLesson 2.7
• Runtime errorThe code is written correctly but fails when it runsLesson 5.1

S

• ScopeWhat exactly is included in the work: pages, features, revisionsLesson 13.4
• Scope / permissionOne specific power you grant, such as "edit Turnstile". Grant the fewest that do the jobLesson 10.5
• ScorecardA weekly record of your activity and results across all channelsLesson 13.6
• Screen readerSoftware that reads a page aloud for people who can't see itLesson 11.9
• ScriptA shortcut in package.json, run with npm run [name]Lesson 4.5
• SecretAnything that unlocks an account or data: passwords, recovery codes, API keysLesson 1.3
• Secret keyA Supabase key that skips your database rules. Server only, never sharedLesson 6.5
• SectionOne horizontal band of a page, like the hero or the menuLesson 2.2
• Secure noteA locked note in your vault, for things like recovery codesLesson 1.7
• Security checklistThe list of checks, each with proof, done before every launch and monthly afterLesson 10.9
• Self-closing tagA tag with nothing inside that closes itself, like <br /> or <Hero />Lesson 4.1
• Semantic tagsTags whose names say what they mean: header, nav, main, section, footerLesson 4.1
• Sender reputationAn inbox provider's memory of whether a sender's emails are wantedLesson 8.1
• ServerA computer that's always online and stores website filesLesson 0.1
• Server ActionA function marked "use server" that runs only on the server and can be called from a formLesson 6.2
• Server ComponentRuns on the server and sends finished HTML. The default in Next.jsLesson 4.4
• Server validationChecks in the Server Action. The ones that keep you safeLesson 6.2
• SessionProof that you signed in, valid for a whileLesson 9.1
• Setup sessionA meeting where the client creates their accounts, with your guidanceLesson 14.4
• ShellThe program that reads your commands: zsh on Mac, PowerShell on WindowsLesson 4.6
• ShortcutA key combination that does something fastLesson 1.6
• Side doorA way to reach your database without going through your website's forms, using the public settings directlyLesson 10.1
• Sign-upsThe ability for anyone to create a new account. You'll switch it offLesson 9.1
• Silent bugA bug with no error message anywhereLesson 5.3
• Silent failureA bug that shows no error: like an unknown Tailwind classLesson 5.6
• Source of truthThe one place a fact is officially recorded. For a website's design and content, that's brief.mdLesson 2.7
• Spacing scaleTailwind's spacing steps: each step is 4 pixelsLesson 4.2
• SpamUnwanted messages or form submissions, usually sent by bots in bulkLesson 10.1
• SpecificContains real facts and decisions, so it can only belong to one businessLesson 2.1
• SPF / DKIM / DMARCThe three proof-of-sender checks: the allowed list, the signature, and the rule for failuresLesson 8.1
• SQLThe language databases understand. Cursor writes it; you read itLesson 7.1
• StageOne of the three big parts of the course: Build it, Make it work, Get paidLesson 0.3
• StagedChanges put in the box with git add, ready to commitLesson 5.5
• StateWhat the page shows in a particular situation: loading, success, error, emptyLesson 2.2
• State prefixhover:, focus-visible:: a class that applies only in that situationLesson 4.2
• Status codeThe server's answer as a number: 200 OK, 404 not found, 500 server errorLesson 5.2
• Steps to reproduceThe exact actions that make the bug happen againLesson 5.3
• Stranger testA script that tries forbidden things using only public settings, to prove they're blockedLesson 9.2
• StringText, in quotesLesson 4.3
• Structure (schema)The design of the database: tables, columns, checks, grants and policiesLesson 10.9
• Stuck ReportA short template that turns "it doesn't work" into a question someone can answerLesson 0.4
• Styles paneThe CSS rules on the selected element; untick to switch one offLesson 5.2
• SupabaseA service that gives you a Postgres database, a dashboard, logins and moreLesson 7.1
• Supabase AuthThe part of Supabase that stores accounts and signs people inLesson 9.1
• SymptomWhat you notice: something missing, red, broken or failing to buildLesson 5.6
• SystemLevel 5: a rules file, a saved brief and step-by-step prompts, so every chat starts at Level 4Lesson 2.2

T

• @themeThe block in globals.css where Tailwind v4 design tokens are definedLesson 4.2
• Tab completionPress Tab to finish a file or folder nameLesson 4.6
• TableOne sheet about one kind of thing: dishes, ordersLesson 7.1
• TagA word in angle brackets, like <p>, that marks a piece of the pageLesson 4.1
• Tailwind CSSA styling system where short class names go straight onto elementsLesson 4.2
• Target rateWhat you aim to earn for an hour of skilled workLesson 14.1
• TBD"To be decided". Use it instead of guessing a detailLesson 2.4
• Tech stackThe set of tools a website is built withLesson 2.4
• TerminalA window where you type commands; PowerShell on Windows, Terminal on MacLesson 1.5
• Test sender[email protected]: works straight away, but only delivers to your own Resend emailLesson 8.1
• TestimonialA client's words about working with you, used with permissionLesson 14.6
• The 15-minute ruleTry alone for 15 minutes, then ask for helpLesson 0.4
• The averageThe most common answer the AI has seen, which it uses whenever it has to guessLesson 2.1
• ThrottlingSlowing the connection on purpose to test weak networksLesson 5.2
• TokenThe signed string at the heart of a session: who you are and until whenLesson 9.1
• Transactional emailAn automatic email a website sends because something happened, like an orderLesson 8.1
• tsconfig.jsonTypeScript settings, including the @/ shortcutLesson 4.5
• TTLHow long resolvers may remember a recordLesson 12.1
• TurnstileCloudflare's free check that a form is being sent by a person, not a botLesson 10.5
• Two-strikes ruleAfter two failed fixes for the same problem, stop and restartLesson 5.4
• TXT recordA piece of text, mostly used to prove you own the domainLesson 12.1
• TypeA label describing what shape a value must haveLesson 4.3
• Type errorTypeScript found a mismatch in shapes; npm run build failsLesson 5.1
• TypeScriptJavaScript with types that catch mistakes before visitors see themLesson 4.3

U

• "use client"The line at the top of a file that makes it a Client ComponentLesson 4.4
• Untracked (U) / Modified (M)A file Git has never saved / a file that changed since the last commitLesson 2.8
• Untracked fileA new file Git has never savedLesson 5.5
• User RulesYour personal rules for every project on your laptopLesson 2.7
• User UIDAn account's permanent unique ID inside your projectLesson 9.2
• Utility classOne tiny ready-made style, like mt-4 or font-boldLesson 4.2

V

• .vercel.app addressThe free web address Vercel gives every projectLesson 1.4
• ValueA piece of information: text, a number, true/false, or nothingLesson 4.3
• VariableA name for a value: const name = "Kofi"Lesson 4.3
• VaultThe locked storage inside your password managerLesson 1.7
• VercelThe service that puts your website on the internet and updates it when you push to GitHubLesson 1.4
• VerificationProving you control the site, here with a TXT recordLesson 12.7
• VulnerabilityA security hole in a package or a setting. Fixed by updating or changing the settingLesson 10.1

W

• Walkthrough videoA screen recording showing how to use the site and dashboardLesson 14.6
• WarningYellow: not ideal, but it still worksLesson 5.1
• WishLevel 1: names the topic and nothing elseLesson 2.2
• Working filesYour files as they are now, including changes Git hasn't savedLesson 5.5
• Working tree cleanEvery file matches your last commit. Nothing waiting to be savedLesson 2.8
• Written approvalA client's "Approved" by email or message, savedLesson 14.3