Conventions
This is a list of conventions about organizing the wiki. These are subject to change, of course, and they're not absolutes - content can be organized other ways.
Tagging
Most content should ideally be tagged. The emerging convention is for the tag to be a category, e.g. "author", and the tag value to be a specific instance of that category, e.g. "Alicorn". Authors, continuities, settings, and threads should be tagged with the authors involved.
The convention for Authors is for each Author to have their own book. An Author may or may not have category-less pages like 'About X'. Common Author chapters are templates, with instances as alts within that template. ('Minor Characters' should probably be its own chapter). Other suggested Author chapters and category-less pages:
Note that page content can be mirrored between pages (https://www.bookstackapp.com/docs/user/reusing-page-content/). Typically, things like "threads" and "settings" go on other shelves, but major examples could reasonably be mirrored (with the base example in the proper shelf).
Continuity Shelf
The convention for Continuities and threads is for each major Continuity to have its own book. We have not figured out a convention for notable Sandboxes yet.