I recommend Paul Comstock's book "The Bent Stick" for beginners myself. That's where I started. Personally, I think Dean's book is a little advanced.
Learn the art of taper tillering instead of tree tillering to begin with. Difference being, when you apply a taper, limb bends accordingly. Tree tillering, you remove wood where you think it needs it to get the limb bending properly. First method, you won't get hinges. Second method, beginners are sure to screw things up. I know I did. So add Paul's book to your list...........Art