Augmented Reality in Windows Phone

Question

I am a Beginner for Windows Phone 7. My project is on developing augmented reality in windows phone.Many of them suggested GART Toolkit. It seems to be good. But as a beginner i am not able to understand that. Are they any other SDK's or Toolkits available other than GART or any tutorial for GART Toolkit? Any Windows Phone lovers here?

Answer 1

http://igrali.wordpress.com/2012/05/13/windows-phone-and-geo-augmented-reality-toolkit-gart/ is the second article that comes up in Bing when you search using the terms: windows phone augmented reality tutorial gart