…this will keep you occupied for a few weeks!
Why not take a course on The Essentials of Entrepreneurship : Thinking and Action
I have not taken them and at the age of 63.75 I don’t think I will. Not for lack of interest but because all my learning time goes into music these days. That’s why (at the age of 63.5) I did take Gary Burton’s course on Jazz Improvisation. It was hard work and I only really put in 15% of the effort but I learned lots and if I did the other 85% seriously I’m sure I’d really improve.