In my move over to lemmy I got nostalgic for how some older things were done, what you might be talking about are FAQs for specific topics like we had in the Usenet days. If this interests you, I have a new community started for collecting and creating those kinds of things. Not much there yet but I’ll grow it over time and would love for others to contribute.

https://lemmy.dbzer0.com/c/faqs

And a shameless plug for my other community https://lemmy.dbzer0.com/c/bbses