Think about wiki page labels (Confluence and GitHub call these labels, Wikipedia and others call these categories) for navigation purposes.
You can put ideas for labels below in comments.
See All Labels for the current list of all labels on this site, with navigation from each label to the pages with that label. Note the dates on the pages as you are viewing pages tagged with particular labels. Labels appear to go in and out of favor. Some of the pages attached to a label may be quite old and of little value.