Welcome and congrats!!!
Make sure everything works before you leave with the new tt!!! Verify the tires are aired to max sidewall pressure.
Not sure what your tv (tow vehicle) is, but make sure you get a good wdh (weight distribution hitch) with integrated swag control. Makes it a little easier when arriving at the cg. The side punted sway control bars usually suggest to unhook the sway bar before backing up. The Reese DualmCam, Reese SC, and the Equal-I-Zer 4 way systems are all very good for the money! The DC is a little more finicky in setting up and needs re-adjusting if the tw (tongue weight) changes a fair amount- if fresh water tank is in from of axles: full vs empty. The SC and 4 way system are very similar. The Reese hitch head (same for both models) does allow a little more fine adjustment vs the Equal-I-Zer hitch head. But you can't go wrong with any of them!!!
Make sure you get the correct rated wd bars. Do not go by the "brochure" dry tongue/hitch weight. That weight does not include the propane tank(s) or a battery!!! Those alone will add ~120 (2-20lb tanks and battery) or ~160lbs (2-30lb tanks and battery) to the "brochure" tw. Plus anything you add to the trailer in front of the axles will add to the tw as well (pending how much is loaded behind the axles). You will want 12-15% of the total loaded trailer weight for tw stable tow.
Even though the dealer will set up the wdh (for an empty trailer), you will probably need to re-adjust it once you load the trailer up.
Follow the links in my signature for a ton of reading regarding the wdh. Make sure you get all the wdh paperwork also....
Driveway camping helps make sure you have everything you may need for a trip if this is your first rig (also cheaper! Lol). Take paper and a pen/pencil to make a list of things you find you need to get while camping.