The IDA Pro Book: The Unofficial Guide to the World’s Most Popular Disassembler

Excellent book! Recommended if you are into Reverse Engineering and not only IDA specific.
Well written with lots of examples. Really enjoyed it. Well worth the money (and even cheaper if you use Amazon Market Place).
I’m back with huge amounts of work so my reversing efforts are on a halt.
Let’s see if things get calm again so I can try some ideas :-).