A really great book if you're a baker and have a scientific mind. Me, not so much. I know baking is a science and I definitely consider myself a baker, but the book was a little much for me. I didn't get out of it what I was hoping to in terms of grasping how one ingredient reacts to another, or this causes that, etc.
The book has lots of diagrams and when something is explained there is a visual to go along with the explanation when possible. One thing I really liked about the book was that the ingredient list gives you the amounts in weight and volume.