Being posted under this topic, I'm guessing you meant self defense-related books.
If that's the case, if I saw the thread, I would've responded with these-
"Tactical Reality" by Louis Awerbuck
"More Tactical Reality" Louis Awerbuck
"Fighting Smarter" Tom Givens
The first two are collections of his Training & Tactics columns that run on the last page of S.W.A.T. magazine. Great info, focused mostly on how to think, with little on hardware, though there is some. Besides having a unique take on things that may usually get covered, he covers topics I have not seen mentioned elsewhere. Aside from him, I haven't seen much on the safest way to use the bathroom, for example.
If you don't find some priceless quotes in there, you aren't looking.
Both those books are available from Paladin Press.
The other one, "Fighting Smarter", is one of those books that I call a "catch-all" book. Those try to cover everything from picking a gun, to how to shoot it, to what to do after a shooting, etc. Most don't, or can't, get very deep into things, but this one is the best I've seen. It covers the usual topics very well, plus adds some that don't seem to get covered much, if at all. He has a fair amount of info about different types of criminals- your possible opponent, which is not something you usually see, but I found very valuable. That section alone is worth getting it. It's not a big book, but there's no fat. If you read one book about protecting yourself, I would pick this one.
The negative to "Fighting Smarter" is availability. The original printing has all been sold. Recently, Mr Givens' business (RangeMaster) started selling an electronic version. Do a search for RangeMaster in Memphis, and you should find it.