I stumbled across this 'cast in iTunes the other day, and have found
it a great audio supplement to the other help tools available from within
GMail (written, Flash demos, and forums).
The 'casts are short, to the point, useful, and he's independent, i.e.,
not an employee of Google, just a guy who wants to share useful info. And even if you know alot about GMail, he's likely to toss in a tidbit or two you've missed.
about getting around and getting the most out of GMail.
My highest reccomendation.