This page will house tutorials and screencasts to help you make the most of your CFF equipment and applications.
So what exactly is a wiki??? This is the best description I've seen...
Wikis in Plain English by CommonCraft

So what exactly is social bookmarking? More from CommonCraft...
Social Bookmarking in Plain English by CommonCraft
So what makes Diigo so nifty? Check out the Diigo Demo video
Diigo Demo