Thanks to everyone who attended, and congrats to the organizers for a great event! It was nice to see a lot of friends again. Here are some resources and additional links for my talk. If you don't mind, please take a few minutes and give us speakers some feedback, at http://spkr8.com/t/9072. We are always thankful for feedback--good or bad--so we can continue to improve our talks.
Start at the Metro Style App Development learning center; this is your gateway to all things Metro and Windows 8.
Magenic has a great White Paper: Assessing the Windows 8 Development Platform. I highly recommend reading this--it's short and very informative.
For debugging, read Adam Kinney's post No Alert in WinJS! Use console or MessageDialog instead.
Design, specifically adherence to the Metro design philosophy, will be crucial in having your app in the Windows Store. Watch Jensen Harris' presentation from Build, 8 traits of great Metro style apps, and check out BlendInsider's link list to UX guidelines for Metro style app development.