Udemy offers the Investing In Stocks: The Complete Course for $49.99. Coupon code "JYY1202" cuts it to $9.99. That's a buck under our December mention, $190 off list, and the lowest price we could find. This course teaches you the basics of investing in the stock market with stocks, mutual funds, and ETFs. It includes lifetime access to 10 hours of on-demand video.