Well, it's dated. And this was too general for my particular needs, but it's pretty darned cute as far as beginner's tours of the subject go. The inside, you have to imagine this, is all in the author's natural handwriting and peppered with sketches like it's his own notebook we're reading. I want to mention that the shape and thickness of this item is more like a magazine than a paperback. (The person who posted it before did not draw attention to it, but I'd like to make sure no one feels that "pang of disappointment" when rec'ing -- so I am making sure it's obvious.) Not a bad pick, overall.