Glock troubleshooting class?
Well, I guess some people need a class on how to house train their dog so if you can get folks to pay you to go over the intricate workings of the simplest pistol ever designed then more power to you. Don't forget your punch and tiny flat screwdriver.
I really don't think there's anything that can go wrong with a Glock that can't be troubleshot with a 5 min. google search.
"Jack Bauer sleeps with a pillow under his gun."
"Bush is listening, use big words."