I own the hardback and purchased it from ICR. The book is full of examples showing the great design our body has. It is simple to read and geared towards youth or high school age, but people from any age can learn things from it. I have a personal problem with stock images. There are too many unnecessary stock images in this book. I'd rather there have been more text instead of unnecessary pictures. But, that's how literature and other forms of media are these days. Overall, a very good book and worth adding to your creation collection.