Good links.

I have heard good input from these video rentals..

http://technicalvideorental.com/rental_27.html

Haven't gotten around to seeing any myself though. Still, the homepage lists lots of metalworking instructional tapes and DVDs.
Worth investigating if classes are not convenient (I'm in the same fix w/work hours!) :-(

My hint is get top quality googles/face shield. You only got two eyes and one face! Good luck.

-David