This document discusses Joomla, an open source content management system (CMS). It provides an overview of what a CMS is and introduces Joomla as a free and easy to use CMS. Key points covered include that Joomla allows non-programmers to construct websites by combining modules, is written in PHP and uses MySQL, and has a wide variety of available modules. The document then discusses requirements, installing Joomla using XAMPP, the basics of Joomla, and simple steps for installing and choosing a template in Joomla.