Scott Guthrie is THE man, he released 8 Silverlight 2.0 Tutorials

Scott Guthrie released 8 tutorials about Silverlight 2.0

Part 1: Creating "Hello World" with Silverlight 2 and VS 2008
Part 2: Using Layout Management
Part 3: Using Networking to Retrieve Data and Populate a DataGrid
Part 4: Using Style Elements to Better Encapsulate Look and Feel
Part 5: Using the ListBox and DataBinding to Display List Data
Part 6: Using User Controls to Implement Master/Details Scenarios
Part 7: Using Templates to Customize Control Look and Feel
Part 8: Creating a Digg Desktop Version of our Application using WPF

Have fun