Recently Exadel had a 4 part webinar series on RichFaces. I attended most of them and thought they were pretty good. The series was pretty simple but did a good job highlighting RichFaces features. Definitely worth checking out.
Today JBoss announced a new RichFaces in Production wiki page. It looks like it will be pretty helpful when trying to find information on RichFaces. Be sure and check it out.
Welcome to the wiki for the RichFaces project! This is a general ad hoc collection of information resources about RichFaces. Users are encouraged to donate meaningful documentation and information (like tips and tricks). Material on this wiki can be migrated to be part of the more formal documentation over time.