This document provides an overview of Visual Studio 2008 training on the .NET Framework 3.5. It covers the multi-targeting feature in VS 2008, debugging .NET 3.5 source code, new libraries like MSBuild and HashSet, and includes labs to work with these features. The training modules introduce .NET version misconceptions, targeting different frameworks, enabling source debugging, using new MSBuild features, and operations of the HashSet generic collection type.