Any tips for a newbie?

Hello all,

So my primary experience is with game mastering in 5e, though my group as a whole has actually been looking at moving to different systems for quite a while now. While I recently have gotten very busy irl and think my GMing escapades may be coming to an end, one of my players who has gotten interested in GMing saw Edgerunners(great show btw) and decided he wants to run a game of Cyberpunk RED for our group, and everyone seems very open

So I'll call that a 2 for 2 win on getting one of my players to try GMing and to try a new system. At this point I have two primary questions.

1. My experience with GMing other systems is quite limited (I ran a honey heist session once but that's about it) but I've been GMing for about 2 years now. How can I be helpful to our new GM as he not only does this for the first time but also does it in a new and unfamiliar system?

2. I'm looking at building a ripperdoc for my first character. I know that means playing medtech and investing a bit into the cybertech and surgery skills, but are there any other skills I wanna look out for when building my first character? I was thinking of throwing a bunch of stuff on a set of cyberarms a d cyberlegs, but I'm not quite sure if there's any specific augments or skills that I'll need that I just don't know about.