Too Long; Didn't Read
The easiest way to install Node is to download the LTS version. The Current version is the latest available version of NodeJS. You can upgrade and downgrade Node with a package manager. There are other package managers available and you can [choose] the one you like. To get the latest version of 16.xx.yy, you only need to provide the first number. The current version is good enough for most users, but be prepared to run into bugs if you use Current.