React from First Principles: A Complete Free Course

Lesson 1: ReactJS Full Course | What is ReactJS | React JS Tutorial for Beginners | ReactJS Full Course #1

This first video introduces the course and explains why React exists. It covers the declarative vs. imperative mindset, the core problem React solves, and sets the foundation for the rest of the series. You'll start with a blank HTML file and CDN links to see React from the ground up.

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Lesson 2: React JSX , Babel, React Components & Props Explained from Scratch | ReactJS Full Course #2

This video dives into JSX, Babel, React components, and props from first principles. You'll learn why JSX exists, how Babel transforms it, and how components and props work under the hood. The focus is on understanding the 'why' behind each concept.

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Lesson 3: React + Vite Complete Setup and Deployment | npm , Plugins, node, Bundlers | ReactJS Full Course #3

This video covers complete React + Vite setup, including both automated and manual methods. You'll learn about npm vs npx, plugins, Node, and bundlers. By the end, you'll have a modern React development environment ready for building apps.

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Lesson 4: React useState Hook | The Complete Guide for Beginners | What is hooks | ReactJS Full Course #4

This video explains the useState hook from absolute first principles. You'll learn why normal JavaScript variables don't work in React components, how useState works internally, and how to use it effectively. It's a complete guide for beginners.

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Lesson 5: useEffect Hook in React | Hook in JS | ReactJS Full Course #5

This video deconstructs the useEffect hook from first principles. It addresses common confusion like infinite loops and when effects run. You'll learn the fundamental rules of useEffect and how to use it for side effects in React.

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Lesson 6: How React works under the Hood | React reconciliation, fibre , diffing , key| ReactJS Full Course #6

This video explains how React works under the hood, covering reconciliation, Fiber, diffing, and keys. You'll understand how React updates the UI efficiently and why keys are important in lists. It's a deep dive into React's internal architecture.

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Lesson 7: React Memo , useMemo and useCallback Hook in React |ReactJS Full Course #7

This video covers React performance optimization with React.memo, useMemo, and useCallback. You'll learn from first principles when and why to use each optimization, with real-world examples. It helps you build faster React applications.

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Lesson 8: useRef Hook in React JS | ReactJS Full Course #8

This video teaches the useRef hook from first principles. You'll learn what useRef is, why it exists, and how it works. It covers using useRef for DOM access and storing mutable values without causing re-renders.

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Lesson 9: React Hook Form | Zod Validation | ReactJS Full Course #9

This video covers form handling in React using React Hook Form and Zod validation. You'll learn to build fast, scalable, and type-safe forms. It's perfect for avoiding messy form code and uncontrolled inputs.

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Lesson 10: UseContext Hook| State Lifting | Props Drilling | ReactJS Full Course #10

This video explains the Context API from scratch using first principles. You'll learn about state lifting, the prop drilling problem, and how Context API solves it. You'll create and use Context to manage global state.

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