Valley has two types of books, the first is the Sweat book which is a review of information that they go over at the actual course. To my knowledge you can't buy that separate, they send it to you when you register for the course. The second book they offer is Memory Master. Memory Master is a huge book of review questions/answers but it is only practice questions. The website below is their homepage where you can register for the course and purchase memory master. The Valley course is great for a review!!