Understanding YaCy

As a sum-up: we need documentation.
Possibly it could be crowd-written by experienced users, using forums etc. and reviewed or edited by the developers.
As @Orbiter wrote before, he’s going to abandon the wiki. (why?)

So what is the place where users are able to contribute? What is the most feasible way to do it?
To edit the docs in faq using github?

Is the structure of docs section good? Shouldn’t it be included /linked in the installation of instances as well? What are the instructions for contribution? How to create new sections etc? Why the other pages (operation section) are not linked? Will the documentation have some index or would it be just FAQ with links?

What sort of documentation we need the most? Quickstart guide? Technology in-deep description?