OpenBSD: Why and How (2016)
>It's not for beginners.<p>Maybe true, but it's not just for experts either. OpenBSD's unfriendly reputation ensured that I languished in Linux land way longer than I should have, convinced that I was too dumb for anything else.<p>If you can navigate directory structure, use a package manager, and uncomment lines in config files, you can use OpenBSD. Try it already. It's good.