I was amazed to see this invaluable Revit resource, in movie format.
Go to www.CADclips.com
Learn how to make custom Revit families, Detail components and Keynotes, just to name a few.
Also Be sure to check out his Revit Blog , RevitRocks.
Daryl Gregoire has imparted with SO much FREE Revit knowledge.
There are also AutoCad training CADClips.
Both links are also at my Revit links