To install Node.js, follow these steps:

1. Open your browser and navigate to https://nodejs.org/en/download.
2. Find the installer that matches your operating system, and click on it to download it.
3. When the download is complete, execute the downloaded file to open the installation wizard, which should look like the following:

4. Click Next to move forward in the wizard steps until the installation begins:

5. Once the Node.js installation is done, click Finish to close the wizard:

6. To test that Node.js was installed successfully, click Start | All Programs | Windows System | Command Prompt.
7. In the Command Prompt window, write the following command and press Enter:

node --version 

  You should see the version of the installed Node.js platform, as shown here:

Installing Node.js also installs npm, so there are no further steps needed.