I've been following this guy for over a decade now and he's had some interesting content on his website and youtube channel (which just got deleted unfortunately) on old European religion. Here's his new one, although it doesn't have his old videos uploaded: https://www.youtube.com/channel/UC0LwDu ... cgVuW_gb_A
He formed the black metal band Burzum and got famous for killing his band member Euronymous, which was recently the subject of the movie Lords of Chaos.
The whole story really isn't that interesting honestly - basically he got paranoid because Euronymous said he wanted to torture him or something like that but he couldn't tell if he was joking or not, and when he showed up at his house he stabbed him in the head a couple of times.
He also created the role-playing game MYFAROG.
It's a pretty mixed bag when it comes to his opinions but he's still someone you should be familiar with, I think. I am also working on a website right now which will explain the truth about the gods that will blow everyone's minds, so it makes sense to be familiar with European mythology before it gets published.