Channel 9 has a number of free technical courses on a number of emerging MS technologies covering a wide range such as Azure, Win7, Identity, SQL Server 2008 R2, Visual Studio 2010, .NET 4.0, Silverlight 4, MOSS 2010, Office 2010, etc.
These cover a number of the features and essentially have everything to get a developer quite comfortable with the stack. In some areas they go a little deep as well. I think its an excellent way to come up to speed.
Here is a quick example of the topics covered in some of the tracks:
- Win7 – how to use the Taskbar, Multitouch, Ribbon, Sensors and Location, Session 0 Isolation, etc.
- Azure – Azure Overview, Azure Storage, Deployment, SQL Azure, etc.
- VS 2010 and .NET 4 – F#, ASP.NET 4, Parallel Computing, ALM, etc.