Refresh, improve and extend this learning path!

[xpepper]

This is a kinda of meta-issue: I'd like to refresh, improve and extend this learning path.

I've spotted several improvement opportunities, to name a few (but important to me):

• Adds an explicit Agile path
• Includes feedbacks and good ideas from the excellent JoeBew's study path
• Includes in this repo also the internship learning path, which is actually published as a google doc here: https://docs.google.com/document/d/1XuPhZ-ZQiLfXm_YejlLAR1ggJOXHWo6c_FpBAB2bpY8/edit#heading=h.svtw8irvfapz

I encourage you to create issues for every improvement we could make together on this learning path.

I'll create an issue about the first point in my list, Agile learning path, to start collecting ideas, resources and feedback.

When we'll have enough stuff for a first version of the Agile learning path, we'll add that to the repo. WDYT?