MSDN.com - Building Apps for Windows 8 and Windows Phone Jump Start

Join Senior Technical Evangelist Ben Riga as he dives into the major similarities and differences between these two platforms while providing invaluable guidance, best practices, and patterns as well as demonstrating techniques to help you deliver apps for both Windows 8 and Windows Phone 8 with maximum code reuse.
Contents:

1a Comparing Windows 8 and Windows Phone 8
1b Comparing Windows 8 and Windows Phone 8
2 Basics of View Models
3 Model-View-ViewModel
4 Sharing Code Between Windows 8 and Windows Phone 8