I wrote a post to explain Pkg and environments for beginners, with a focus on some of the aspects I found confusing myself when I started out. Hope it helps:
This is great! Can you share it on https://forem.julialang.org?
I don’t really want to repost the whole thing somewhere else, does Forem also take links to external posts with a short description?
You could do that, but it usually only takes 3-4 minutes to copy and paste and fix any formatting issues.