I think this is a great idea, although I don't know if I'm a good candidate for it, since I never officially got past a Pre-Calculus level. I recently decided in the past couple weeks to go through Khan Academy from the very beginning (simple arithmetic! :), and run through every one of their exercises. I'm moving pretty fast through all the refresher courses, and I'm amazed at what I've retained (and disappointed at…
there may be a few applications in 18.06 that you miss out on but it wont' be a big deal.