docs(ll): Added first lessons learned

content/lessons_learned/_index.md

@@ -4,4 +4,10 @@ title: Lessons Learned
 weight: 8
 ---
 
-TODO:
+## General concepts
+
+- Everyone still struggels with platforms and getting people to use them
+
+## Tools/Projects
+
+- I should really take a look at KRO again