Woohoow, again a new great time to be a silverlight developer. Silverlight 4 beta has been announced on PDC 2009 this week. Have a look at the keynote from the moment you have time, click here   
  
To get started with Silverlight 4, go and see the get started page on the silverlight site: http://silverlight.net/getstarted/silverlight-4-beta/. On this site you’ll find:  
     -  All the tools needed to get started 
     -  tutorials and hands on labs 
     -  Video’s 
  
  So get your hands dirty and dive into this exiting world of client development
  K