I would recommend reading the 2 posts from my sections Steem Made clear first and then see from there. That is the bear minimum. Then one should read on how to set up a witness and there's a lot of good post about this on Steem.
As for the credentials, every bit of knowledge about computer science, cryptography, cryptocurrencies and being highly invested and passionate about Steem will help.
I would recommend reading the 2 posts from my sections Steem Made clear first and then see from there. That is the bear minimum. Then one should read on how to set up a witness and there's a lot of good post about this on Steem.
As for the credentials, every bit of knowledge about computer science, cryptography, cryptocurrencies and being highly invested and passionate about Steem will help.