Microsoft Press has published a FREE eBook on the most awaiting releases of SQL Server 2008 R2. The book is written by Ross Mistry and Stacia Misner. Ross is my personal friend and one of the most active book writers in SQL Server Domain. When I see his name on any book, I am sure that it will be high quality and easy to read book.
Ross has written many other books, which I am a big fan of as well.
The details about the book is here:
Introducing Microsoft SQL Server 2008 R2, by Ross Mistry and Stacia Misner
The book contains 10 chapters and 216 pages.
PART I Database Administration
CHAPTER 1 SQL Server 2008 R2 Editions and Enhancements
CHAPTER 2 Multi-Server Administration
CHAPTER 3 Data-Tier Applications
CHAPTER 4 High Availability and Virtualization Enhancements
CHAPTER 5 Consolidation and Monitoring
PART II Business Intelligence Development
CHAPTER 6 Scalable Data Warehousing
CHAPTER 7 Master Data Services
CHAPTER 8 Complex Event Processing with StreamInsight
CHAPTER 9 Reporting Services Enhancements
CHAPTER 10 Self-Service Analysis with PowerPivot
More detail about the book is listed here.
Reference: Pinal Dave (https://blog.sqlauthority.com)