This is a narrative to get you oriented to how this place works, and to the key policies and guidelines.
This place is wide open -- like a city with no locks on its doors -- and anybody can just wander in, with their own notions of what they should do here. We have no training process and you don't need any license. We rely on that ancient, all-the-way-back-to-our-primate-roots human sociality for people to absorb the mission, and the policies and guidelines. Somebody could write an interesting paper about how that works (and doesn't work).
The welcome messages provide a series of links, but there really is no single narrative provided anywhere. So this is meant to sort of grease the wheels of the normal learning process here, for people who are in a hurry or who have been here a while but somehow never got the memo, as it were.