A new free Silverlight 4 Training Kit is now available 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. I’ve included a breakdown and links to all of the content here in this post. 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.
I definitely recommend Module 3 – Authentication, Validation, MVVM, Commands, Implicit Styles and RichTextBox
This lab demonstrates how to build a login screen, integrate ASP.NET authentication, and perform validation on data elements. Model-View-ViewModel (MVVM) is introduced and used in this lab as a pattern to help separate the UI and business logic. You will also learn how to use implicit styling and the new RichTextBox control.