BSD UNIX toolbox : 1000+ commands for FreeBSD, OpenBSD, and NetBSD power users / Christopher Negus and François Caen
Good, a book on BSD. I have been waiting for this, because most books of this type feature Linux, and BSD deserves more attention. This book is slim at 300 pages, and will be useful for beginner and intermediate admins. Much of the content also applies to Linux and Unix.