There’s a new book that I was able to contribute to as a Technical Editor that was released. Following the Silverlight 3 official RTW release, you might want to hop in quickly and start learning about all of the awesome new stuff available. I knew each of the authors personally and you’ll enjoy reading & working through all of the examples in the book. Have fun!
Disclaimer: That’s my personal opinion. I don’t receive any royalties off of the book sales.
Ed Blankenship