If your child has OCD, make sure you invest in this book. I purchased several books and this one is hands-down the best no matter what your child's obsessions/compulsions or what stage you are at from first recognizing the disorder to going through the therapy.
As other reviewers have noted, it is easy to read and understand. It is also very complete and includes obsessions/compulsions not covered in other books I have read. It answers questions like "normal vs. OCD: What's the difference" - an important thing for parents to be able to recognize when their child is being themselves and when the OCD monster is affecting them. It also tells you what to expect in the first evaluation, how to navigate CBT (cognitive behavior therapy), and info on medications.
Another very helpful aspect is the school section (I even took the book with me to the teacher conference). It outlines what you should and should not share with the school/teacher and how to approach the whole subject without having your child labeled. It has "Red Flags for OCD in School"- a great thing to share with the teacher. And how to form a partnership with the school to best benefit your child.
All in all, a great and helpful book.