There's docs.nodebb.org for most of that information (or at least, ideally). Sadly, documentation isn't as appealing to most developers as writing code, so it usually lags behind in terms of relevance to the latest version of the software it's for (which is typically why there's a separate team dedicated to keeping it up, at least in my experience).
However, the docs are also open source, so that's where community members can come in and contribute even if they're not well versed in NodeJS development: Keeping the docs up to date, and consolidating this information in the forums as it comes up helps everyone.
