Fellow UK Touring driver here!
Have your BMW ID setup and the BMW app downloaded and logged in before you go, as others have said, makes it easier to setup your car.
Hold down the "set" button on the steering wheel to turn off the annoying speed limit warnings, i only leave them enabled for long journeys where i don't know local speed limits.
The pan roof caught me out, if you press it back once it opens to the size of a "normal" sun roof, i thought it was broken, you have to press and hold the button for a short time to get it to open completely.
Locking wheel nut was under the floor of the boot on mine.
Get some microfibre cloths, finger smudges on all control surfaces are annoying at times....
Make sure they've given you mats, i got 2 sets, one from the lease company which are a bit rubbish, but the genuine BMW one's fit nicely but i'm saving them for when it's a bit drier in the uk....
Set your seat position and then save it to number 1 by pressing and holding the number on the door. It will also save to your profile, but i like to keep it on there in case anyone else jumps in and changes the seat position. You can make the seat slide backwards/forwards for comfort exit/entry, it's an option in the seating app i think.
The nearside mirror will dip for reversing or not, depending on which mirror button in the door handle you have selected, left mirror button for no dip., right mirror button for dip.
Download the BMW Guide app and tell it your model, it's the instruction manual and you can find loads of good info in there.
Download Zapmap, great for finding charging points. I also have a folder full of other charging apps on my phone, charge scotland, Tesla etc etc