Here are a couple of Visual Studio 11 Developer Preview videos from the recently held Microsoft developers conference BUILD:
What's new in Visual Studio 11 - Jason Zander
Tips & Tricks: How to Use Visual Studio to the Fullest - Weston Hutchins and Phil Price
What's new in Visual Studio 11 for Application Lifecycle Management - Cameron Skinner and Brian Keller
You can download the Cheat sheet here (.docx).