Modules allow you to turn on and off functionality within your Drupal website. There are two types of modules: core modules, which come with Drupal itself, and contributed modules, which are provided for free by the Drupal community and available for download from Drupal.org. In this lesson we're going to look at the module administration page, and walk through finding and installing modules. We'll wrap things up by discussing how you remove a module from your site, and the difference between disabling and uninstalling.