Charles Petzold, the author of Programming Windows has released a book about Programming Windows Phone 7, from the perspective of both the Silverlight and XNA Game Studio application models.
It’s also available in e-book form for… free! It’s a 13MB PDF that can be downloaded from Microsoft Press. Get it before they run out! 
This is part two of a two-part tutorial dealing with touch and accelerometer input on the Zune HD. It’s assumed that readers have already read the first part, which provides a full discussion of building the application to this point, including required prerequisites. If you haven’t read it already, see Making the Zune HD Sparkle with XNA Game Studio 3.1 – Part 1.
This part of the tutorial adds a number of GUI elements to the application, making it more complete by adding an instruction screen and a menu to manipulate the behavior of the display.
