Build websites from scratch — HTML, CSS, JavaScript, responsive design, frameworks (React, Svelte, Solid, Astro, Remix, Qwik), Web Components, WebAssembly, Canvas, SVG, Three.js & React Three Fiber, WebGL shaders, PixiJS, p5.js, D3, Mapbox, animation libs, container queries, Houdini, design systems, Storybook, Playwright, Vitest, state management (Redux/Zustand/Jotai/XState), TanStack Query, GraphQL, tRPC, Server Components, edge functions, Bun & Deno, monorepos, authentication services, WebAuthn passkeys, payments, headless CMS, modern browser APIs, and realtime. 953 lessons across 64 units.