This document provides instructions for updating and cleaning up a Mac. It includes steps to: 1. Update important software like Microsoft Office, Apple software, Firefox and Chrome browsers. Do not upgrade to Yosemite. 2. Clear cache and browsing data from Firefox by opening Preferences > Privacy and clearing history. Do the same for Chrome by opening History and clearing browsing data. 3. Clear cache from three locations on the hard drive: Library > Cache, System > Library > Cache, and the user's folder. Delete cache files, empty trash, and restart to fully remove cache files.