I have two good arc flash dvd's; one from Bussmann and one from Square D that I use, with permission, for the two classes I teach at County Vo-Tech.
Contact Bussmann and apply for the Safety Basic package, and go to the Sq. D website and request 'It's a matter of your safety'. Yes, they are mfg produced items, and contain some mfg tilted comments, but it's worth it.
If you happen to know the local mfg reps, they can usually supply the above quicker then the electronis/written requests.
Most mfg have similar training aids for instructors, all you have to do is some searching.