To install Node.js and npm, follow these steps:

1. Go to the Node.js website (https://nodejs.org/en/) and download the latest version of Node.js for your operating system.
2. Run the installer and follow the prompts to complete the installation.
3. Once the installation is complete, open a command prompt or terminal window and type “node -v” to verify that Node.js is installed correctly. This command should display the version number of Node.js.
4. Next, type “npm -v” to verify that npm (Node Package Manager) is installed. This command should display the version number of npm.
5. You’re all set! Now you can start using Node.js and npm to build your projects.

Note: If you’re using a Unix-based operating system (such as macOS or Linux), you may need to run the installer with administrator privileges by using the “sudo” command. For example, “sudo npm install -g create-react-app”.

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