This guide shows you how to make the most of Team Foundation Server. You will find it on Codeplex.
Content:
Part I, Fundamentals
Part II, Source Control
Part III, Builds
Part IV, Large Project Considerations
Part V, Project Management
Part VI, Process Templates
Part VII, Reporting
Part VIII, Setting Up and Maintaining the Team Environment
Part IX, Visual Studio Team System 2008 Team Foundation Server
You should also check out the complementary Visual Studio Team System Guide.