I would like to see step by step guides on how to create and maintain local rational meetup groups. Tutorials, example debates, how to be moderator, and etc. All of the resources that can possibly be provided online to lower the barrier for people who want to organize locally.

I have nothing more then first hand observation, but it seems much "easier" to propagate a culture long term(potentially multi-generational) with in person meetups. If LessWorng wants to have the largest impact possible on humanities rationality this seems like the best option.