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Hand-written tutorials, ordered as a recommended learning path.

1. 61 React Router Learn React Router's modern data APIs. Install, create a browser router, define routes, navigate with Link and useNavigate, and use loaders and actions for data. 6 min read →
2. 62 Server Components A clear, practical explanation of React Server Components: the runtime model, the boundary between server and client, data fetching, and the tradeoffs. 6 min read →
3. 63 Suspense & Lazy Use React.lazy and Suspense to code-split a React app, design fallback UI, place boundaries thoughtfully, and understand how Suspense extends to data fetching. 6 min read →
4. 64 useMemo & useCallback A practical guide to React's useMemo and useCallback hooks, covering referential equality, when memoization helps performance, when it backfires, and how to profile first. 6 min read →
5. 65 useReducer Understand React's useReducer hook, its signature, action shape, when to migrate from useState, and how to build a small state machine pattern for predictable UI logic. 7 min read →