- node -v - current installed version of node.
- node - launch the REPL (Node shell)
- npm init - create a package.json file
- npm -v - current installed version of npm
- npm install - install everything from package.json dependencies (if you cloned smth from gitgub for ex)
- npm install nameOfThePackage - install a package
- npm install nameOfThePackage -D - install a package as dev dependency