WARNING: Facebook has made a LOT of changes since some of this stuff was written.
Video tutorials: Free tutorials (Not mine!)
Short, simple video tutorial on facebook. Useful stuff for the beginner. Unfortunately, the creator has retired from the independent computer business to become a "genius" with Apple Computer. http://www.youtube.com/watch?v=FwSK9dImHEE
Facebook for grownups (10 part series). Good tutorial series on facebook basics. http://www.youtube.com/watch?v=QCVi0-50Vmo&feature=related
How-to:
Advanced bug: If you edit a personal website, then post it's link on facebook (as I did with this site), facebook displays a preview (part of the websites first page) with the link on the facebook page. Facebook stores this preview in a cache that is not user-accessable. Later, when you make changes to the (first page of the)website, and post the link again, the preview is displayed from the cache and still shows the old web content. When you click on the link to open the page, the correct page is displayed. The cache will eventually get refreshed (3-5 days) and the problem will go away.