re: Poker & Anyone know a good book mainly about out caculations..
Holdem on the Come is one that is written with limit in mind, I think its by Slotbloom. I think most books that deal with estimating outs will be from a limit perspective, as having the information as accurate as you can is absolutely essential to limit(particularly fishy low limit) play. Since you can basically solve the game against predictable and bad enough players.
But I also recommend Sklansky's catalogue. Especially for limit play. It made me a solid winner live pretty quickly. For some reason I still can't win at limit online though:/