If you really want to learn NL hold'em there's only one book I'd recommend to really teach you the game. Small Stakes NLHE
by Ed Miller, Sunny Mehta, and Matt Flynn. It's on sale right now for $65.
This is more expensive than most books you can buy from amazon, but I am not kidding when I tell you this book is worth way more. I bought it for $100 and it was EASILY worth the price.
No other book I've ever read has been this good period.
I've read most of them too btw. I have a pretty extensive poker library, so I have some perspective.