As a formally trained teacher who prefers to work in informal settings, I honestly can’t wrap my mind around the fact that there are actually people who think you don’t have to be a good teacher to teach outside a formal classroom. I just can’t!
If you can explain things to other people, that’s great. Please teach people around you what you know! If you know a lot, but can’t put together a coherent thought, then leave the teaching to someone else. Nothing creates a bad learning situation more quickly than a teacher who cannot figure out how to explain what they are teaching to their student.
I hope to have instructional materials available online in the near future, and I can only hope I won’t be one of these people.