Comment by kthejoker2

I offer nothing definitive, but one of the greatest benefits of StackOverflow has been to quantifiably classify most of the common problems in computer science, programming, analytics (and to a lesser extent the other StackExchange communities ...)

If you go there, search for a tag, sort by popularity, etc. - most of those techniques and approaches and patterns are, if not timeless, then mostly timeless and relevant.