If you have not had a chance to track down the Windows Phone Insider App let me introduce you to it right here. The app, developed by Microsoft, brings you fresh content in several categories that will help you as you learn and use your Windows Phone handset.
As I said this app gets updated regularly and brings you tips, apps, games, ringtones and wallpapers. In this latest update the ringtones are all Halloween related and the wallpapers come from images that have appeared on the Bing homepage.
The tips and getting started suggestions are intended to help you learn more about your Windows Phone handset and how to use it to its maximum potential. With the apps and games browser you can see details on each featured app, read reviews and you can directly head into the Windows Phone Marketplace to download the app to your phone. These recommendations are updated weekly.
Here are some screenshots of the app:
This app is only for Windows Phone 7.5, or Mango, handsets.