With your new TT, you're going to need to buy some accessories. With respect to towing, it's helpful to have convex mirrors or some sort. If you have extended mirrors but convex mirrors are not incorporated as part of the unit, small round convex mirrors can be attached via an adhesive backing.
As others have stated, make sure your WDH is properly configured. Your dealer will have it configured with an empty TT and your unloaded tow vehicle. See the sticky on this forum to learn how to set-up your rig like a pro.
Before departing anywhere with your TT, ensure that all your lugs are properly torqued. This will require the purchase of a torque wrench. Get a good one that won't be out of spec in a couple of months. Also, before departing, (1) check tire inflation (which will be based on TT weight); (2) check hitch area for proper connections (ie, WDH system, safety chains, break-away cable, etc.); (3) the lights; (4) do a walk-around to make sure your electrical cord(s)/hose(s) are disconnected, steps are closed, all storage doors securely closed, and nothing will be left behind.
Know the true height of your TT. Determine the height with the AC unit(s) -- write the height on a small business card and keep near your odometer. When pulling into gas stations or going thru low bridges/overpasses, you immediately will know whether you can clear the zone or not. Don't guess or assume you'll be OK.
Before backing-up, survey the location. Consider the elevation of the spot (both side-to-side and lengthwise), and make sure you have the necessary blocks for leveling. If you have a slide-out, factor in the width of it when trees/bushes are in play.
When backing-up, until you become comfortable with the process, it's helpful to have two (2) people outside the tow vehicle to assist. Have one person up-front with you (who can see the overall "picture") and another person at the back. The two outsiders can be on radio with each other to communicate easily.
Before disengaging the TT from tow vehicle, use wheel chocks.
Before driving, get a "feel" for the length of your rig by having a car parked 5', 10', 15', and 20' behind your TT while you sit in the drivers seat. Lock those images in your memory. This will help you when passing other vehicles on the highway. Get some soccer cones and use when practicing in a parking lot.
While driving, don't plan on going faster than 65mph. Your TT tires are (most likely) rated for 65mph max. Going faster increases the probability that you'll get a flat. With cross-winds, slow down. If mother nature pulls out all the stops (wind, rain, etc), take a pit-stop and wait for the storm to pass (if possible). You'll encounter all sorts of tailgaters, so plan on installing machine guns on your rear bumper (before they are banned!) to keep tailgaters at bay. For the avoidance of doubt, I'm joking (!). Actually, just ignore these idiots and allow them to pass if possible.
Get into a routine when hooking-up and unhooking so that you don't forget a step or two when interrupted by a family member or a CG visitor.
Finally, remember, safety is your number one concern when towing. Good luck and many happy trails with your TT.
2004 Suburban 2500 LT 8.1L/4.10/4x4
Putnam XDR Class V, Equalizer 1400#
2006 Jayco Eagle 264BHS
Iota DLS-55, Progressive Industries EMS-HW30C, Trimetric TM-2025