Below are some good resources for learning a variety of Microsoft technologies...since I focus heavily on the web, you'll find that most are web-related, but I'll throw in a few Windows Phone and Silverlight resources as well from time to time...

Downloads

• Microsoft WebMatrix - Simple, easy-to-learn, lightweight web development tool.
• Windows Phone SDK - Get Started developing apps for Windows Phone 7.
• Windows Azure SDK - Get started building cloud apps today!
• Windows Azure Free Trial Offer - Kick the tires on Microsoft's cloud offering, for free.

Tutorials and Tips

• Learn ASP.NET MVC Step By Step in 7 Days
• MVC 3 Scaffolding - Steve Sanderson
• MVC 3 Unobtrusive Validation - Brad Wilson
• Performance Tuning for ASP.NET and IIS 7 - Mads Kristensen
• http://css-tricks.com/ - Great CSS resource

Articles and Books

• Free Microsoft WebMatrix ebook from Ubelly
• Pro ASP.NET MVC 2 Framework - Steven Sanderson (great book for gaining a solid foundation in how ASP.NET MVC works)

Screencasts and Videos

• The Oscilloscope, explained
  
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  Scaffolding – ASP.NET, NuGet, Entity Framework Code First and More
  
  
  
• Getting Started with Custom Themes in Orchard - Bertrand Le Roy
  
  
  
• ASP.NET MVC 2 Introduction - Scott Hanselman
  



• MVCConf Videos

Templates

• Windows Phone 7 SketchFlow Template (requires SketchFlow and the WP7 Mango Tools)