Figure out your charging scheme early and get it installed, if possible. Or at least order parts.
The simplest thing to do is to hook the car up to a 120 VAC outlet somewhere using the included Mobile Connector. However, the best these things do with 120 VAC and 12A (on a 15A circuit) is about 5 miles of charge per hour. And, if it's cold, like below freezing, this might get reduced to one or two miles of charge per hour, since the car tries to get the battery up to temperature, and the 1.4 kW or so from the 120 VAC circuit may not be able to cut it, especially if the car's outside or in a cold garage.
A better bet is to hook the car up to 240 VAC. The Mobile Connector can connect to any number of 240V socket types, the NEMA14-50 being vaguely preferred. You'll need to check with your delivery specialist as to what adapters for what sockets come with the Mobile Connector that comes with the car, then order the appropriate 240 VAC adapter.
There's been quite a bit of commentary around the forums here that, if you've got typical electrical building codes, you'll need (a) a 240 VAC circuit, (b) some kind of GFI safety feature on the socket, and (c) a high-quality 240 VAC socket, since the cheap ones found in Home Depot are known not to last. After one has paid for all this, it turns out to be slightly less expensive or a wash to actually buy a Tesla Wall Connector. Buying one of those, with the right breaker size and wire for 60A, will get you the maximum charge rate for the car, around 45 miles of charge per hour, and zero issues regarding charging in cold weather. Although that last would also be true for any 240 VAC circuit, Mobile or Wall Connector.
Thing is, though, that you'd like to have 240 VAC. Now, my place, it's relatively new construction, and it came with 200A service. Adding a 60A 240 VAC breaker to the collection was Not A Problem. But I've personally seen much older homes with, what, 75A service and no or single additional breaker spots in the breaker panel. What this means: You'll probably want to hire an electrician to put in the 240 VAC circuit. The cost in labor and materials can vary quite a bit. In my case, the breaker box happened to be in the garage, making things dead easy. Other people have the breaker box in the basement on the far side of the house from the garage or, worse, the car's parked in a shed with either no service or very little.
All of which means: Line up your electrical contractor sooner than later and Get Estimates. Tesla at one time kept a list of contractors who were more-or-less Tesla Certified; don't know if they still do, or if they do where you are. It's not a biggie if you use a non-Tesla guy or gal, but make durn sure whoever you get is state-licensed, and not some gonzo who takes shortcuts.