First of all the retail price of the book is too much. The last section (video on texture and cloth simulation) which he thinks are the most advanced are just pretty lame. He could have better described how to export a skinned mesh better. The ragdoll effect as given is not combined with an animated model making it a bit less useful. The book does cover a lot on using skeletal animation that was definately not covered in other books that I've bought on the subject. I'm also glad that it has no intro to DX section. PS: Who wrote the 5 star review, the author?