The Digital Photography Book by Scott Kelby.
I just got this book and it is not a theory book if thats what you are looking for. The idea of the book is that he is talking to you as if you were on a shoot with him. He doesn't tell you how shutter speed/aperture, etc work...he just says do this and that to get this shot.
If you are looking for more explanation on photography, I am taking an online class right now and the textbook we are using is called "Langford's Starting Photography, A guide to better pictures for film and digital camera users" It pretty much covers everything, and as a beginner myself I found this to be very helpful, and then try reading the Scott Kelby book.
http://www.amazon.com/Langfords-Sta...206466-9940607?ie=UTF8&qid=1173982155&sr=11-1
http://www.amazon.com/Digital-Photo...206466-9940607?ie=UTF8&qid=1173982200&sr=11-1
Hope this helps!!