The Linux Newcomers Guide
Linux.about.com has a Linux Newcomers Guide that is an excellent walkthrough of the process of choosing the right operating system, the right distribution, the right configuration, etc. Most new Linux users should be able to understand it, it’s quite straight forward.
This guides provides you with step-by-step information that you may use for the process of comparing operating systems, deciding if Linux is for you, choosing a Linux distribution, installing and configuring it, and getting software applications for your Linux environment.
For anyone considering Linux I recommend spending a little bit of time weighing certain issues to see if that move is right for you, but while you’re thinking about it I hope you get yourself a LiveCD of some kind. LiveCDs are discs that you pop in and run Linux straight off of - they don’t change your computer at all. So if you’re considering Linux at all, let it show you how much fun it is.