Hi, if you are interested in helping people with their ruby/rails issues, there is also reddit / ruby discord / rails slack / and stack overflow. I'm trying to be active on Reddit and the Discord but not very active on slack/stack overflow. There are already quite a few people helping but more people would help :).
Hartl is great, has his/its place etc. Sometimes you just need a smart person with experience to add personal context. Happy to be of service.