For those that haven't gone out and gotten the Resource Kit Book R2 yet, I've figured I would go ahead and give you a little incentive by stating what the chapters are in the book.

 Chapter 1 - Overview of OCS 2007 R2
 Chapter 2 - New Features Overview
 Chapter 3 - Server Roles
 Chapter 4 - Infrastructure and Security Considerations
 Chapter 5 - Basic IM and Presence Scenarios
 Chapter 6 - Conference Scenarios
 Chapter 7 - Remote Access and Federation Scenarios
 Chapter 8 - Public IM Scenarios
 Chapter 9 - Remote Call Control Scenarios
 Chapter 10 - Dual Forking Scenarios
 Chapter 11 - VOIP Scenarios
 Chapter 12 - Voice Mail Scenarios
 Chapter 13 - Enterprise Voice Application Scenarios
 Chapter 14 - Planning Example
 Chapter 15 - Deployment Example
 Chapter 16 - Monitoring
 Chapter 17 - Backup and Retore
 Chapter 18 - Administration
 Chapter 19 - Client and Device Administration
 Chapter 20 - Diagnostic Tools and Resources
 Chapter 21 - Troubleshooting Problems
 Chapter 22 - Routing and Authentication