This document provides an introduction to Linux and compares it to other operating systems. It outlines several advantages of Linux including being free, easy to install and use, having full permissions, being customizable, taking up little space, and being resistant to viruses and hacking. It then discusses five areas where Linux performs better than Mac OS X: security, customizability, hardware compatibility, reliability, and price. Linux is presented as a free and high-performing alternative to other operating systems.