I purchased this book as a reference. Fortunately, I had a separate training course for learning the Crystal application. And I now teach the product.
It's a good reference. I truly haven't had a question yet regarding basic or advanced procedures in the application that I couldn't find. But I would not recommend it for learning the application. It is dense.
I'm also disappointed that it is not very different from the CR 8.0 manual published by Crystal Decisions. The layout and procession of the book are virtually the same! It could have included more tutorials, too.
One thing that I would love for any CR reference/manual to include is a list and description of all the formulas in the system. To my knowledge, this does not exist anywhere, even in Crystal's own documentation.
PURCHASING RECOMMENDATION
If you need a solid reference and didn't purchase manuals with Crystal, this will work. If you need to learn the product, get something else.