Teslas have a manual door handle in the arm rest; there is also one for the rear passengers, but it is a little more obscure.
One of the great things about buying a Tesla is the easy of taking delivery. Super fast, no up-selling, none of that stuff.
You are basically pointed to your car and off you go. Someone will go with you for inspection and questions, but if you don't know what to ask, how do you know what to ask? Plus, with any new car purchase, owners are generally pretty excited.
By the way, the poor knowledge transfer process is not unique to Tesla. I still don't know how to use a bunch of stuff on our Lexi, especially the RX.
Learning how your car works after an accident is a bad way to go...