The October 2011 issue of MSDN Magazine is now available online.  In it, you can find three articles about the new async/await features of C# and Visual Basic.  While the articles can stand alone, they were written with each other in mind in order to provide a 1-2-3 on-ramp into the world of asynchronous programming with these new language and library features.

Here they are.  If you read them all, we recommend you read them in the following order:

1. Asynchronous Programming: Easier Asynchronous Programming with the New Visual Studio Async CTP by Eric Lippert
2. Asynchronous Programming: Pause and Play with Await by Mads Torgersen
3. Asynchronous Programming: Understanding the Costs of Async and Await by Stephen Toub

Enjoy!