go get a volt meter, watch some youtube videos, figure it out.
i would start with simple things, like door light switches, ignition key switch, and so on. pulling fuses do not necessarily help diagnose issues.
I suggest you start here
https://www.youtube.com/watch?v=lRcj1fQcWwU
not only is this a GREAT video, but this guy is a BIG VW guy too, he has LOTS of videos, same with chris fix and so on.