If you are looking for resources such as presentations, tutorials, and labs, using Visual Studio 2008 and C# 3.5, then download this training kit. According to the description, "The content is designed to help you learn how to utilize the Visual Studio 2008 features and a variety of framework technologies including: LINQ, C# 3.0, Visual Basic 9, WCF, WF, WPF, ASP.NET AJAX, VSTO, CardSpace, SilverLight, Mobile and Application Lifecycle Management."

This kit is a goldmine and will take me some time to get through it all. Free development training, take advantage of it.

Visual Studio 2008 and .NET Framework 3.5 Training Kit