I recommend Tip Tap Tones : Tip Tap Tones for Windows Phone helps language learners to identify the sounds and tones of Mandarin Chinese in a way that is fast, fun, and effective.
Conversing in Mandarin will be an essential skill in the near future
Loading User Information from Channel 9
Something went wrong getting user information from Channel 9
Loading User Information from MSDN
Something went wrong getting user information from MSDN
Loading Visual Studio Achievements
Something went wrong getting the Visual Studio Achievements