The document provides instructions for installing Joomla 1.7.3 on a Macintosh computer. It is a 9 step process that includes extracting and moving the Joomla folder to the xampp/htdocs directory, accessing the pre-installation check via localhost, configuring the database and main site settings, installing sample data, and deleting the installation folder before completing the process. Upon finishing, the administrator login page can be accessed.