Andreas Antonopoulos and Stefan Molyneux discussing the potentially world-changing aspect of free currencies when the majority of the world gain access to them. Excerpted from "Bitcoin vs. The Federal Reserve" https://youtu.be/wzwWIDIVSTo

Understanding how something works is key to using it effectively, so it's worth a little effort to get to grips with this. The best video I've found that explains how blockchains work is this one. https://anders.com/blockchain/ is his site, where you can try it out for yourself.