Learning how to trade stocks can be done with the help of online or classroom courses, but make sure to research the instructor’s background. Sign up a for a stock trading class with visual information for a smoother learning experience with tips from afutures and options floor trader in this free video on investing. Expert: Mark Griffith Bio: Mark Griffith has graduated in economics and philosophy at Clare College, Cambridge. He has been a futures and options floor trader at LIFFE (London …