The Definitive Guide to PC-BSD Frugal Unix for Power Users (Paperback)
PC-BSD has had more than 900k downloads in the first half of 2009 alone. The company creating PC-BSD is backing this book fully, and this is the only book on the market covering PC-BSD. PC-BSD is the fastest-growing consumer open source operating system, growing faster than any Linux variety.
From the Publisher:
In a thorough reference for both beginning and advanced users of PC-BSD--a free, easy-to-use operating system that is fast becoming a hassle-free alternative to Linux--teaches how to contribute one's prowess to the global PC-BSD community. Original.