I'm mainly doing it because I want to be better at Kerbal Space Program, but edx have a free course going on right now:
https://www.edx.org/course/introduction-aerospace-engineering-mitx-16-00x-0
I'm mainly doing it because I want to be better at Kerbal Space Program, but edx have a free course going on right now:
https://www.edx.org/course/introduction-aerospace-engineering-mitx-16-00x-0