How does someone dm over level 20 characters

I was having a chat with one of the GnG players that I meet with in person and he suggested offering courses teaching people how to play various ttrpg systems. I thought this was a great idea, so I've made two courses so far with this in mind. The intention is for people who have never played these systems before to learn how to play as we go through a weekly campaign together. What games would like to learn as we play?

If you could pick anything you would like to learn from me, what would it be? I've started by setting up a Games Master Masterclass and another for Games Literacy tutoring, but I'd like to figure out a couple of low cost subscription offers. What would you like to see?

Hi everyone. You more than likely know me already, but for those who don't here's a little about myself. I'm Antony, also known as AntonyM the DM, AntonyM the AuDHDacious and AntonyM Copeland. I'm 45, on the spectrum, and I love all kinds of games. I also geek out about stories and my favourite games typically have a strong story element to them, or are just really silly like Exploding Kittens! As you might well imagine, my favourite type of game to run or play is a roleplaying game (D&D, Pathfinder, Cyberpunk, Vampire the Masquerade, etc), with boardgames like Hero Quest and Talisman not far behind. I also play videogames, with Skyrim and Minecraft being recurring favourites. I'm excited for Larian Studios new Divinity game despite the controversy regarding AI tools. I also love to stream a good fantasy, sci-fi, horror or mystery series. What's your favourite game, book or tv show?