React Get Started

Create your first React app in minutes!

Install Required Tools

1. Node.js - Download from nodejs.org
2. VS Code - Code editor

Create App

npx create-react-app my-app
cd my-app
npm start

Browser opens at http://localhost:3000

File Structure

my-app/
  src/App.js    ← Your code here
  src/index.js  ← Entry point
  public/       ← Static files

First Change

Edit src/App.js:

function App() {
  return (
    <div>
      <h1>My First React App</h1>
      <p>Hello World!</p>
    </div>
  );
}

export default App;

Save and see changes automatically!

Quick Fixes

• "npx not found" → Install Node.js
• Port 3000 busy → Use port 3001
• Stop app → Ctrl + C

Next: Learn JSX syntax!