Well it hasn’t taken long for more people to jump on the XNA 3.0 Community Technical Preview that was announced last week. Sam Stokes has a blog post showing the step by step that one needs to take to get the software installed and ready to run. He’s got a lot of screen captures to really make it clear what is going on.
Dan Waters who has cranked out a number of previous helpful videos and code samples does it again with his latest work. Here Dan posts a video introduction to creating a game for the Zune. The video can be downloaded as can the sample code that he uses in the demo itself. This may be a good way to jump start your own experimentation with programming games for the Zune.
BTW if you are interested in seeing what high school students are doing in the way of creating XNA games, Brian Scarbeau has been posting video of his student’s work on his blog. It’s interesting to watch as they implement games in their own image as they test out the programming and game development knowledge that they have been learning this semester. It will be interesting to watch what they create as time goes on and their programming knowledge increases.
Lastly, don't forget that the online forums for XNA are a great resource for getting questions answered and problems solved. I see discussion on programming for Zune devices there already.