He's following the structure of the book very closely, covering essentially exactly the same material. If he keeps going the way he is, he will cover the book'

He's following the structure of the book very closely, covering essentially exactly the same material. If he keeps going the way he is, he will cover the book's contents. Also, versions of his book are available for free on the net, or at least were when I last looked. So it's not clear that it's a marketing exercise.