Hi!
Xavier encouraged me to answer here, so here I go:
I’m leading an initiative to create a MOOC titled “Contributing to Free/Libre Open Source Software”, in partnership with Framasoft. We are currently at the scenarisation phase and I just put what we have online at https://gitlab.com/mooc-floss/mooc-floss/
It’s a bit difficult to start, but I think we’ll make it 