This document provides an introduction and overview of Joomla, an open-source content management system (CMS). It defines what open-source software and a CMS are, and explains some basic and additional features commonly found in CMS platforms. These include content repositories, dynamic page generation, workflow procedures, editing tools, syndication, personalization, caching, and more. The document also discusses different types of CMS like document management systems, digital asset management, and web content management. It compares static and dynamic websites, and static websites versus CMS websites. Finally, it provides guidelines for planning a website, choosing domain names, web hosting, and designing and developing effective websites.