Yeah, the book starts by stating that everyone can have a photographic-like memory if they practice the right techniques, goes on to explain the history of the art of memory, and then intersperses detailed descriptions of the techniques with a fascinating autobiography. It's probably not the best tutorial, but it's a great starting point and also a really fun and fast read. At the very least, I can guarantee it will greatly change the way you look at what the human brain is capable of.