My only real thought, at the moment, is to make sure your 7 Plus is backed up -- if you are going to restore from the 7 Plus. I suppose you could find a tutorial on using the gestures -- though you'll get one of those when you first start the set up on your iPhone X.
Mostly, just enjoy your new device, it is a great phone!
Don’t drop it #1 . Just mess around with it I’ve had mine 4 days now an loving apple finally gave us a oled screen the gestures take a couple hours getting used to an enjoy it.