Hi there, first of all I own a gog version so I don't have the editor yet but I can share my experience with the NWN2 toolset which I've been using 6 years now.
When I first opened it it was chaotic. I had no clue how to create an area, what a script looked like and how to create a module that is playable. The good thing was, that the community was very active. This is what we need, aside from a wiki page that is on its way. Whenever we have a problem or encounter something we don't know how to tackle... ask around here. Someone might have already solved it.
In the NWN2 community, rjshae created the toolset notes, which is some documents of personal notes about how to achieve various things. He did it as he built and kept notes to reference in case he needed to do the same thing and forgot how it works. Then he published them. I aim to do the same for divinity once I start modding.
Furthermore, one of the best things in the NWN2 forums was that we have a different section for different aspects. I would love if this was the case here too. Section scripting for scripting questions, section toolset for building questions and so on. Just modding section is too abstract.