If this exists somewhere, I did try to find it and could not, so apologies.
Moodle Documentation does not have a section that I could find on Navigation, and such a section might be useful. Questions such as, "How do I find all of a student's forum posts?" "How do students find their own forum posts?", etc., might be included here.
Just a thought. The two example questions above were not included in the Forum Documentation (Using, FAQs, etc).