Gamemaster’s Guideposts

I’ve been playing role-playing games for a long time (I gamed for the first time with my brother when I was seven) and I’ve been running games for almost as long (I ran my first game when I was 11). I made a lot of mistakes in the beginning, mistakes I’d like to prevent newbie GMs from making. Most of the advice is just general “know-how” and are systemless, but a good chunk of them have to do with GURPS (my preferred system engine) specifically. They appear alphabetically: