http://msdn.microsoft.com/windowsvista/building/presentation/default.aspx

"Set of tutorials for the January 2006 Community Technology Preview (CTP) that guides you step-by-step through the process of developing a complete Windows Presentation Foundation application using Visual Studio 2005, the WinFX SDK and the Visual Studio 2005 Extensions for WinFX."

Direct link to labs: http://msdn.microsoft.com/windowsvista/building/presentation/hands_on_lab/default.aspx

-Marc