Hi Andreas, I installed OpenBSD on Oct. 16. 2017 after 18 years in Linux motivated by reading an article from Derek Sivers on OpenBSD 6.1/6.2
I started with reading FAQ and mailing lists (mostly tech and misc) history. I also searched for some other articles on OpenBSD but I very soon understood, that there are very few and that this is absolutely another world, than Linux. Now after several weeks I use Google only occasionally, I stopped using stackoverflow et. al. I'm just reading FAQ, man pages, dotfiles and gists on Github and if I need to ask for help I ask people in OpenBSD Jumpstart group in Telegram or people on Twitter. They are very friendly and willing to help with anything. Don't spend your time or energy on something like Arch Linux wiki. Ve.