Visit the Publisher site (link above) and download a free chapter.
I am new to Data Protection Manager (DPM) and needed a way to get up to speed quickly to start managing an existing deployment. This book is arranged in a way that helps you understand what DPM is, what it does, and how to do it. The step by step instructions are very detailed. I would highly recommend this book for those starting out or those wanting to learn more about DPM.
This is currently the only book out on DPM 2010 (as of June 2011).
* I am not affiliated with Packt Publishing or the Author nor did I receive any benefits from this recommendation.