Spend an hour just sitting in the car going through all the menus. Some of them are dull and boring, but playing with the audio settings (Immersive Sound, Balance) can be eye opening, and the stuff under entertainment fun.
Get used to Autopilot and it's various options on the open highway. Start slowly, learn how much turning force you have to apply to the steering wheel to keep it happy without disengaging it, learn how to set the following distance from the steering wheel, how to raise and lower speed, how manual lane changes work (if you have that feature), etc. Expect to be fully in control of the car while you're learning, until you learn how much and where you can trust it.
Don't try to show passengers all the cool features of the car while you're driving. Sure, the vents are neat, the audio settings are cool, and Fart mode will always bring a laugh, but your passengers won't appreciate that you're weaving around on the road while trying to pull up the menus to show them off, so restrain yourself. Spend some time playing with
voice commands. Some of them are stupid, some whimsical, many are useful. These you
can show off easily to passengers.
Yes, the car will accelerate like a bat out of hell, and like every 17 year old you'll find out that tires are expensive as a result. Restraining yourself from full throttle at zero speed will reduce your rubber consumption - you can get almost as big of a grin by using half throttle up to 20 mph/35 kph before pressing on to full throttle.
At least once a day use full acceleration. It's a great way to keep the grin going.
Figure out your charging solution. An EV is a great car if you have a good daily charging solution overnight or at work. It's more of a hassle if you have to use public chargers.
Make sure you have a TeslaCam USB Flash Drive installed, and the little camera icon has a red dot when you're driving.
Always carry one of the keycards with you, even if you're using your phone as a key. Once or twice a year, my car stops recognizing my iPhone and I have to remove it as a key and re-add it - but this requires a keycard. It'd be a bummer if it happened while you were out. And don't forget that someone else (spouse, boyfriend/girlfriend, etc) with access to your Tesla account can start the car remotely if you lose your phone/keycard. My wife left the house one day without her phone (my phone was close enough to the car to let it start and drive away), and called me an hour or so later on a stranger's phone telling me the car wouldn't start. Just pulled up the Tesla app, started the car, and she made it home.
Recognize that, once you get used to the car, you'll find that you almost never touch the screen. All the controls you actually use while driving are on the steering column.
Just have fun, and every day see if you can grin about one more tiny detail that Tesla did differently, and got right. I'm still thrilled every time I have to do a U-turn and note how much easier the 2-turn lock-to-lock steering makes that than the 3-turn that everyone else uses.
