Hello all, I'm very new and trying to get as much info as i can. I read a lot of threads and soak up a lot of info, but still don't know how a tank works. I would benefit from a diagram that explaines how the water goes from here into here. Then there into there. You all know the terms. I know some of the terms, but i need to know it all, and the purposes of each component. So I figure a book would be in order. What is the best book for beginners out there?