This document provides an introduction and overview of the content management system Drupal. It begins with defining what Drupal is and how it can be used to build various types of websites. It then covers how to set up Drupal locally and describes the basic structures of nodes, databases, and blocks. The document includes step-by-step tutorials for changing site settings and working with users, modules, and clean URLs. It concludes with recommendations for popular third-party modules to extend Drupal's functionality.