Congratulations! Three years into my Model 3 and I can say without doubt its the best vehicle Ive ever owned. I love driving it. Heres some thoughts I would recommend.
1. Get a home wall charger. We barely see any cost in our bill and can start out charged daily. Its an investment, but worth every penny. I used Ace Electric.
2. Charging to 100% is discouraged unless you are leaving for a trip. I set my daily charge to 80% and dont usually let it get under 20% unless Im road tripping. Not good to have the battery at the tails of charge level
3. I recommend getting at least the front of your car wrapped with paint protection film. Its remarkably good at absorbing the rock chips and can be replaced without huge expense. I did full front and up to the B pillar, and rear view mirrors. Another investment without regret. I also had the paint covered with a ceramic coating - 3 years later and water still just beads off. Can recommend Knox Details. Working with Tim is great and they have done a lot of Teslas. I tinted my windows some too and dont regret it.
4. I have a frunk and trunk organizer and like both. Aftermaket places like Abstract Ocean and Evannex are great for little do-dads. I stuff them with windex, microfiber rags, etc.
5. Even under bright sun the roof tinting is solid. I bought a mesh filler and have never used it.
6. Dont expect tire wear to be the sam as on an ICE car. I got 21k miles on my OEM Michelins with generally normal driving, but spirited on ramping! Im now using Continental's with a harder compound with the hop to get more out of these. The front to back wear difference is real so I recommend getting them swapped at 5-7 k miles.
7. I didnt like the original carpet mats and got the Tesla "WeatherTech" versions from the Tesla shop. I dont regret that at all.
8. I got the Tesla tire inflator-goop injector to carry in the car just in case. It took me some time to remember I no longer have a spare on board, but I dont think about it any more.
9. Regen braking is amazing but takes time to adjust to. I have it set on max and hardly ever use my brakes.
10. If a charger end wont release from your car, on the inside of the trunk behind th eport you will find a hole you can reach into and there is a little pull hanging down that will manually allow you to disconnect.
11. This forum, TeslaOwners forum/podcast, and Ride the Lightning podcast have tons of help on practically everything.
12. I set my screen to show battery charge percent left not "miles". I have a dual motor and have never gotten anything near 300 miles of range for a full charge in the real world - a packed car on a road trip will get you more like 200. You will get used to your favorite superchargers which determines where you stop on a drive (assuming you do some repeated road trips). That said, you can trust the on board projector for where you can reach for a charge. I hate being under 15%, but of it says Ill make a supercharger with 7% it'll be pretty close.
13. Enjoy the hell out of your new car. Its phenomenal!