Just a few notes from me on this deservedly prominent title: This book, along with the online FreeBSD Handbook, gave me the nudge I needed to get FreeBSD under control and molded into a productive desktop system. All this while I was in the fragile "hey, I'm new and I don't know what the hell I am doing" stage. I received it as a gift from my wife after she spotted me eyeballing it in a bookstore. The book is getting on in age, but it happens to be aging quite well.
As any reader of freebsd-questions knows, Mr. Lehey has graciously made an electronic form of the book freely available here:
http://www.lemis.com/grog/Documentation/CFBSD/
He also maintains errata content here:
http://www.lemis.com/errata-4.html