Money & Business - 129 free documentaries about how economies work.
Start with End of the Road: How Money Became Worthless (56 min, ENDEVR), then The PROBLEM with Capitalism - Smarter Every Day 316 (56 min, Smarter Every Day). All 129 documentaries here are free to watch from their makers' official uploads. To read deeper, the top-rated book on how economies work is Freakonomics by Steven D. Levitt.