Microsoft has just released a new free Silverlight 4 Training Kit that walks you through building business applications with Silverlight 4. You can also download the entire offline version of the kit here. You can use the 8 modules, 25 videos, and several hands on labs online or offline from links on the Channel 9 site.
The key to this training material is not the features it covers (though it covers a variety them) but rather that it teaches from the perspective of building a business application.
The Silverlight 4 Training Course includes a whitepaper that explains all of the new Silverlight 4 features, several hands-on-labs that explain the features, and a 8 unit course for building business applications with Silverlight 4. The business applications course includes 8 modules with extensive hands on labs as well as 25 accompanying videos that walk you through key aspects of building a business application with Silverlight. Key aspects in this course are working with numerous sandboxed and elevated out of browser features, the new RichTextBox control, implicit styling, webcam, drag and drop, multi touch, validation, authentication, MEF, WCF RIA Services, right mouse click, and much more!
It really expects some previous knowledge of Silverlight but I’m going to give it a whirl myself anyway.