I’ve been waiting for a long time for this, and Karl Shifflet finally did it !
Karl is a WPF guru, and he just started a new series of articles on Model-View-ViewModel. Here is his own introduction: “My goal is to provide an introduction, several simple examples and progress to a series of WPF LOB scenarios where M-V-VM is used. Scenarios like, dialog box, simple form, master – detail, complex master detail with several embedded ViewModels, etc.”
I’m sure this series will very soon become the reference to learn MVVM. His first article is about validating the user input in a concise and agile way. Right now, I can’t give more details because I just start to read the article, but I’ll try to give my feedback as soon as possible.