This document provides an introduction and overview of Linux, including what Linux is, its advantages over other operating systems, how to find different Linux distributions (distros), how to install or test drive a distro, and where to get help both online and locally. The key topics covered are how Linux is an open source alternative to Windows and Apple, how to extend the life of old PCs using Linux, and how to create a bootable USB or DVD to install or try a Linux distro temporarily.