The default installation of Drupal has many useful modules, and there is a brief description of what each one of the modules does. If you need more modules, you can freely download them from the Drupal Modules official website.
On your site, Drupal modules are stored in the modules subfolder within the Drupal installation directory. You can install additional modules by simply unzipping them in that folder.
How to install/enable the Event module?We will demonstrate the module installation process in Drupal by installing the Event module.
Visit Drupal Modules website and find the Event module. Download it to your local harddrive. Then upload the archive in the modules folder of your Drupal installation and extract it.
Now you can enable the Event module from your administration area.