First I wish to note that my son who is ADHD, and is using Ritalin, is creative and fully functional with excitement all around him. He has bright impossible ideas and has all the positives an ADHD can have. Except that lots of the negative spontaneous comments and actions have minimized. It makes it much easier for me as a parent to teach him behavioral and life skills because he is calmer and easier to communicate with.
Some reviews dislike the book because it supports medication in addition to behavioral skills. The exercises that these reviews mention may work theoretically, but you would need lots of time and resources on the part of the parent and lots of cooperation on part of the child, besides all the parenting skills that need to be taught with much more patients than with non-ADHD children. For working parents this may be operation impossible. After all said and done, even for parents that have all the time in the world, the child will be busy either with school or with exercise, and almost nothing else.
I've checked the reviews on Amazon.com. Someone posted a very positive and informative review back in January, and the that review already has 110 Helpful hits.