Resources for Windows Phone 7 Development
If you’ve already downloaded the free ebook Programming Windows Phone 7 from Microsoft Press and you still want more, visit the Windows Phone developer resources pages on App Hub.
The team has created topic pages so you can learn everything you need to know to create great apps and games for Windows Phone.
LINKS:
XNA Game Studio and XNA Framework
Windows Phone Developer Tools and Device Unlock
User Experience and User Interface
Application and Execution Model
Push Notifications and Live Tiles
Globalization and Localization