You can now download a bunch of help content around Getting Started with Project 2010. This content includes a guide to the ribbon, information on what’s new in 2010, and a PowerPoint you can use for training people on 2010:
Link to download location - http://www.microsoft.com/downloads/en/details.aspx?FamilyID=d05156e8-3ee5-4735-a45a-b4372f12abdb
Additionally, you can find that help content and much more posted here - http://office2010.microsoft.com/en-us/project-help
As always, let us know if you have any feedback on the content or have requests for future help articles.