Introduction to React — What is React? — History and versions — Why use React? — React vs. other frameworks Setting Up the Environment — Node.js & npm installation — Installing create-react-app — File structure of a React app JSX (JavaScript XML) — What is JSX? — JSX syntax and expressions — Embedding expressions in JSX — JSX rules & best practices Components in React — Functional Components — Class Components — Props in components — Component reusability State and Events — What is state? — useState hook — Handling events — Binding events Conditional Rendering — if/else in JSX — Ternary operator — Logical AND (&&) Lists and Keys — Rendering lists using map() — Using key prop Forms in React — Controlled vs uncontrolled components — Input fields, checkboxes, radio buttons — Form submission handling React Hooks — useState — useEffect — useRef — useContext — Rules of hooks useEffect in Depth — Component lifecycle with useEffect — Cleanup function — useEffect with dependencies React Router — Installation and setup — Routing and navigation — Route parameters and 404 pages — Nested routes Context API — Creating and using context — useContext hook — Avoiding prop drilling Styling in React — CSS modules — Styled-components — Tailwind CSS with React Component Composition — Children props — Higher-Order Components (HOC) — Render props pattern Custom Hooks — Why create custom hooks? — Examples of custom hooks Performance Optimization — React.memo — useCallback — useMemo — Lazy loading components Error Handling — Error boundaries — Try-catch in async functions Testing in React — Unit testing with Jest — Testing components with React Testing Library Redux & State Management — Redux basics — Actions, reducers, store — Redux Toolkit — useSelector & useDispatch React with APIs — Fetching data with fetch/axios — useEffect for API calls — Loading and error states Next.js (React Framework) — File-based routing — Static and server-side rendering — API routes React and TypeScript — Typing props and state — Interfaces and types — Type-safe hooks Authentication — Login/Signup forms — JWT authentication — Role-based access control Deploying React Apps — Netlify/Vercel deployment — GitHub Pages — Dockerize React app Real Projects Ideas — To-do App — Weather App — E-commerce frontend — Blog CMS — Chat app with WebSockets