Where can I find Windows Phone Resources?

If you want to get started on Windows Phone development I strongly recommend that you take a look at the videos from Mix. They are very well presented and easy to view on your PC. There is even an HD version of each one.

http://live.visitmix.com/MIX10/Sessions/CL01 – a good introduction to Windows phone and why it is the way it is

http://live.visitmix.com/MIX10/Sessions/CL13 – a good overview of the windows phone and how you build and deploy applications

http://live.visitmix.com/MIX10/Sessions/CL16

http://live.visitmix.com/MIX10/Sessions/CL17 – these two sessions give a very good introduction to Silverlight development on the phone

http://live.visitmix.com/MIX10/Sessions/CL21 – how to use XNA to build games

http://live.visitmix.com/MIX10/Sessions/CL18 – a nice in-depth description of how the phone works internally

You can get the SDK for Windows Phone here.

You can get the first six chapters of the new book from Charles Petzold on Windows Phone development here.

Reddit has a whole bunch of very good links here.

The forums for Windows Phone developers (which are very well staffed with knowledgeable Microsoft moderators) are here.

There is now a Programming Guide for Windows Phone on MSDN which you can find here.

You can get my demos and slide deck from DevDays2010  here.