Learned some and laughed some
Most of my learnings have come *after* my PPL, and I'm still learning with a long way to go, as I'm a low hour "in the kill zone" (200hrs) PPL.
Listening avidly to other pilots around different hangars, flying with other PPL's to different airfields and countries and reading interesting books like How and Why Pilots Die.
Mostly what I learned on PPRune was to not follow an Ag / GA commercial career and just enjoy flying for what it is to me - a really fun hobby.