How to encourage more GMs

[Abraham Z]

I would love a GM 101 class. I would definitely attend such a class. I was personally intimidated about GMing because I was worried about not knowing every single rule from memory, or that someone was going to play a complicated (requires 7+ side books to legally play, etc.) PC that I don't know the rules about.

I get that, but if it's any encouragement, there's no one who knows every rule from memory, or who understands all the crazy builds that are out there. I found that my transition to GM-ing was made much easier by the people playing at my table, who would help me out when I was unsure of a rule.