A module is a community-created plugin that enhances Drupal's core functionality. From XML sitemaps to better page titles, modules are crucial to the search engine optimization of any Drupal site. Installing modules is easy and once you know how to install one, you probably know how to install them all.
In the upcoming chapters, you'll come across a lot of Drupal modules. You need to carry out the following steps in order install 99% of Drupal modules: