Hi there! I still suck at first-person shooters (FPS), but it took me a while to learn some tips to make yourself better at FPS.
I have been playing D&D for a number of years and more recently started running as DM of my own campaigns. I have been running campaigns for two years now, but I am still learning to this day.
Still, while there are a number of great video and text resources out there, I wished there was a more streamlined, holistic guide to how to be a first time DM or GM. In the interest of paying it forward, here is my guide, with a short table of contents, to get yourself started in running your first adventure. I hope it helps!