struggling with my first EPDM roof - any pointers?

I'm tackling my garage roof this weekend, decided to go with EPDM since it seemed straightforward enough from the videos I watched. But now that I'm actually staring at the rolls of rubber and adhesive buckets in my driveway, I'm feeling a bit overwhelmed, haha. I've done shingles before, but this is a whole different animal.

One thing that's bugging me is prepping the surface - how clean does it really need to be? I've swept it off pretty good, but there's still some stubborn dirt and old adhesive residue from the previous roofing material. Do I need to get it spotless or is "mostly clean" good enough?

Also, any tricks for dealing with wrinkles or bubbles when laying down the membrane? I keep picturing myself wrestling with a giant sheet of cling wrap and ending up stuck underneath it somehow... you know what I mean.

If you've done this before and have any wisdom (or horror stories) to share, I'd appreciate it.