Congratulations on your new (to you) Tesla. Sounds like you got a great deal! Enjoy the car you deserve it. Safe travels.
It's actually got FSD beta. I haven't activated it yet, but I did try the traffic-aware cruise control (TACC). I've been initiating the lane changes with the turn signal myself, but I might let it do that for me a bit today.
I do have this and the passenger seat has the lumbar thing too. Kind of funny, my '88 Ford Ranger has a similar lumbar support, though I think it's an inflatable bladder of some kind. The Tesla lumbar support appears to have two separate support things going on. I need to read up on them.
Autopilot and FSD skill will come with time but initially treat it as a strange critter who is likely to bite unexpectedly. I avoid letting either do a turn at intersections, especially multi lane turns. Straight through works but left turns can often change lanes during the turn or even head into an oncoming traffic lane. I recently published a YouTube video on the “Wilson Wander.” I bought my Tesla for AutoPilot and it has significantly improved. FSD is still a little rough around the edges so vigilance is warranted. BTW, get used to smiling a lot! Bob Wilson