npm install [module_name] install a module locally to your project, into a “node_modules” directory • npm install -g [module_name] installs the module globally, useful for CLI tools • npm cache clean clear system wide module cache
• npm install [module_name] --save-dev saves to “devDependencies” • npm remove [module_name] remove the module from “node_modules” • npm list will list all the modules and its dependencies in your project