The core download provides modules for functionality such as:
- Managing user accounts (the core User module)
- Managing basic content (the core Node module) and fields (the core Field and Field UI modules; there are also core modules providing field types)
- Managing navigation menus (the core Menu UI module)
- Making lists, grids, and blocks from existing content (the core Views and Views UI modules)
You can download additional contributed modules from the Drupal.org Module Downloads, or create your own custom modules.
Written by Jennifer Hodgdon.