Kenny Spade is a Microsoft Academic Developer Evangelist out in California who has been writing a series of blog posts that help one learn how to write a Windows Phone game using XNA. There is code, pictures, explanations of what is going on and lots of good information here. It doesn’t seem to be getting the attention it deserves so I thought I would pass a long some link love. The series so far is:
If you are interested in games for the Windows Phone, other XNA development for the Windows Phone or XNA in general give Kenny’s blog a look.