New to Tesla

ETA: I picked it up this afternoon and it took me a whole 30 seconds to get used to it and understand it 😆 I was tripping for absolutely nothing lol lol thank you everyone for the encouragement.

I'm a bit on the nervous and anxious side. I'm picking up my 1st tesla this Sunday and I haven't done a test drive because I ordered an inventory car and it happened quickly (the showroom is also far away). So probably they won't have time to show me how to drive it (?) and the regen braking is giving me anxiety, I feel like im going to cause a wreck when I get close to the first stop light right after the tesla parking lot. I'm used to driving cars that I can coast a long ways until I stop. Need a little reassurance/advice. How far do I need to take my foot off the accelerator before a light on the highway