Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/economics-finance-domain/core-finance/money-and-banking/banking-and-money/v/banking-4-multiplier-effect-and-the-money-supply How “money” is created in a fractional reserve banking system. M0 and M1 definitions of the money suppy. The multiplier effect. More free lessons at: http://www.khanacademy.org/video?v=F7r7l1VG-Tw