Answer 1: Node.js is an open source JavaScript-based server side environment. Npm is a package manager for JavaScript.

Answer 2: You can find the installation packages and instructions for multiple operating systems from https://nodejs.org/en/download.

Answer 3: Visual Studio Code (VSCode) is an open source code editor for multiple programming languages.

Answer 4: You can find the installation packages and instructions for multiple operating systems from https://code.visualstudio.com.

Answer 5: You have to install create-react-app globally using the npm. Then you create an app using the following command create-react-app projectname.

Answer 6: You can run the app using the following command npm start or yarn start.

Answer 7: You can start by modifying the App.js file and when you save the modification, you can see the changes immediately in the web browser.