Here's a detailed post about it: https://steemit.com/steemit-guides/@pfunk/a-full-steemit-user-s-guide-to-steem-witnesses
I don't want to rewrite it because I'm not an expert on the topic. It's funny, I'm reading Amethyst Chapter Two now. Will comment on it after.
Oh no that's the last badly formatted one of it XD
That's great to hear then. I hope readership picks up then :D