How do you keep your Excel wiki or internal knowledge base organized?

I’m trying to build a small internal wiki for my team covering common Excel workflows, formula examples, and troubleshooting steps. Right now it’s a messy folder of loose notes and screenshots. Does anyone here maintain something similar for their office or department? I’d love to hear how you structure it, what tools you use (SharePoint, OneNote, something else), and how you actually get people to follow it instead of just asking you the same questions every week. Do you embed Excel files directly, or just document steps with screenshots? Also curious if anyone links out to the official Microsoft docs or the r/excel wiki for deeper dives. Trying to avoid reinventing the wheel here.