The instructions are included in almost every download available.
Try looking in the folders you downloaded.
Again if you have a F series car or beyond there will be some variations
to the Interface setup to get Esys going . You need to go to a board that
supports that or start collecting info from the Internet about that.
Ista problems
https://www.e90post.com/forums/showthread.php?t=1581663
If you are technically challenged there are people on here that will do a remote
setup for you. But then again maybe you should buy one of the canned setups
like Bimmergeeks pro tools.
I don't think that supports F series and beyond though.