With all the people out there willing to offer help on Linux, getting started should be pretty easy. But with many options in introductory books and easy-to-install distributions, choosing a place to start can be the hard part.
Mark G. Sobell, A Practical Guide to Ubuntu Linux. 2007. Prentice Hall PTR. ISBN-10: 013236039X ISBN-13: 978-0132360395. Includes an Ubuntu install DVD.P
icking a distribution gets a lot less challenging when you remember to choose based on where you plan to go for help. Your local user group mailing list will be a lot more useful when other members know the locations and utilities you're talking about. Just subscribe to your local user group mailing list, and lurk for a while to find out what distribution the most helpful people there use. Then pick up a copy of a good Linux book, burn an install CD, and jump in.