http://www.goodcat-trainings.net/
"The training walks you through the development of a small game for Windows Phone (that is also available in the Marketplace for free) and shows various aspects of programming for the platform, including:
Working with MVVM
Unit testing
Creating user controls
Visual States, Triggers, Actions
Animations
The application bar
Tombstoning
Sharing code between platforms (the project includes a WPF level editor)
Working with the Toolkit (in particular, the LongListSelector)
Advertising (both Microsoft's SDK and AdDuplex)
Creating an about page
Profiling your app to identify and resolve performance problems
Details of the submission process
The training is targeted at "Mango" and makes use of its new features, and of course the full source code for every session, including the final product, is available too."