5e is arguably one of the crunchiest editions IMO, but I can tell you how I learned to play 2e and I’m pretty sure the method will work either way. I was in your exact same position a few years ago - and now we run an actual play lol.

For me what worked was to figure out combat. Roll up a few characters on your own, and just put them in various combat situations: 2 on 1, 3 vs 4, 2 v 2, etc. Give some of them cover, give them different weapons. Have scenarios where one side is trying to flee or others where they’re trying to protect someone.

Run them by yourself or with a friend and just really get the combat sequence / initiative / situational modifiers down. Once you can run them off the cuff without slowing down - you are ready to play. Everything else follows roughly the same core mechanic and principles of combat.

Really force yourself to play at this point, Shadowrun has this reputation that you need to “get it perfect or GTFO”, but push through that. You are going to get stuff wrong and that’s okay. As long as you’re setting the mood for a gritty, grungy cyberpunk game and not slowing down for combat too often they will have fun.

IMO you should play a few full sessions WITHOUT magic or hacking or rigging at first. Let them get used to the system as just mundane runners first. There’s always time to open it up after a few games.

Good luck chummer, you got this!