1npx create-react-app my-app
2cd my-app
3npm start

1  npx create-react-app my-app
2cd my-app
3npm start

1npx create-react-app hello-world
2cd hello-world && npm start

11. npx create-react-app app-name2. cd app-name3. npm start 

1//open terminal and run this code
2create-react-app newreact
3//it will install all the packages