Hi,
First of all congratulations and welcome to the Bimmer family.
As for your questions, follow the instructions on this website:
https://www.newtis.info
They are the official BMW guidelines that was copied from their system to this website. Some owners who have the same car and DIY people might chip in as well to help you.
I have BMW’s own car cover (which I rarely use). I also have one made to my X3 which is a lot cheaper.
If you have any other questions don’t hesitate to ask.