I have just finish to read the Book from Michael Lucas "Absolute OpenBSD Second Ed." a few days ago and i really have to say that the book rocks! if some one has just a little experience on Linux and want to move to BSD this is the book for you as u will see having just basic knowledge from command lines Michal will explain u in very efficient way what to expect from OpenBSD, he will guide u from a funny perspective to broad and deeper content of OpenBSD system and will show u how to do a lot of god things with such a great Operative System at the end this book its good enough so u can quickly start using OpenBSD for your future environments, good job Michael!!!
