Get free Flash tutorials for the Avid Xpress suite directly from the Avid website: http://www.avid.com/freedv/tutorials/index.asp .
The tutorials cover all aspects of working with Avid's industry standard NLE: capture, working with projects, clips and sequences, editing, titling, working with audio, effects, export.
Available both for Windows and Mac.
Download size is approximately 66 megs.