IBM's "Linux Client Migration Cookbook"

IBM's guide to switching to Linux for the Desktop. If you've ever read an IBM Redbook, you know what you're in for, but there's a lot of good information included. I like that fact that this book is on planning and implementation. These guys think the process through completely, not just theoretically. The Redbooks have never been accused of skimping on info. The PDF comes in at 268 pages and is free.