Drupal manages information and access for all visitors to your site, called users, through a system of roles and permissions.

Devel is a popular developer module containing a variety of developer and debugging utilities including Webprofiler, Devel generate and Kint.

A site’s main navigation elements, whether they be in the header, footer, or sidebar, are composed of links built using Drupal's menu system. Drupal allows site administrators to build menus while also allowing module developers to add and alter menus in code.

Learn to use data from your Drupal site to create customized lists in various forms, such as bulleted lists, grids, calendars, or sliders.

Entities are the fundamental building blocks that make up any Drupal site. Having a good understanding of the Entity system is an important part of ensuring the data model of your Drupal site is set up properly.