If anyone, ever, wants to learn not just how to GM from a rules perspective but from a *how to have your table have fun narratively perspective*, or train teams of GMs to run convention style one shots, everyone should look at Abby and what they do. An absolute juggernaut who deserves their flowers.
I have one of the best lines from my running games at GenCon, and I kind of want to put it on business cards and let it define my entire game style, but also know that I probably shouldn't. "Running tragedy and horror RPGs with the joyful enthusiasm and energy of a kindergarten teacher."