as for how I would teach a new player, i would walk up to them, using LOOC i would first ask if they knew how to talk, and tell them how if not, then I would make sure they ate, once that’s done, if they are a marine, I would walk them through how to gear up properly, giving them tips on what to grab, but also telling them to try out whatever loadouts they think is best, I would then walk them to the guns section, and based on what type of ammo storage they grabbed, if it is a shotgun, I would walk them through how it works in detail since shotguns are harder to use on average than most guns, I would then teach them about attachments, recommending they start with a MH, and letting them experiment with the rest while giving tips. then I would walk them to the gun range, teach them how to shoot with 2 hands, watching lines of fire, the usefulness of sidearms, and proper firearm storage. once they know all that, i would tell em the basics of meds, (bica heals brute, kelo heals burns, tram is a painkiller etc.) once they know all this, I would walk them to the hangar. tell them their squads role, tell them to follow their SL, not wander alone, and listen to commands announcements. I would stick with them till Alamo cycles, answering any questions they still have.
If it was a nurse, I would bring them to the loadout room for doctors, recommend them some gear, then I would go to an out of the way location of med bay and walk them through each chem in their belt, as well as the trauma kits and splints, once they know all that, I would teach how to revive people while asking an admin to spawn me a DUMMY, once the dummy was spawned, I would damage it above the revive threshhold, and teach the nurse how to bring it below the threshold, the effectiveness of epi, etc. then, i would teach them surgery using the dummy, once they know all that, I would teach them how to make the common orders for chems, and how to use the machines effectively once they got all that, I would let them practice with the dummy to let them figure out anything I didn’t mention.
If its an MT, i would teach them the basics of cade making, construction and deconstruction, apc repairs, and vendor hacking, i would also reinforce the usefulness of autolathes, especially for getting metal for further constructions.