The first lessonGeneral principles in the system marginalGeneral idea of the method of work on a marginWhat is to work on a margin?To be able to understand the mechanism of the introduction of margin, we easily we shall explain by example Serafguena felt all the time.Suppose you want to trade in cars and so that you are buying a car then you are selling in the market for a buyer at a higher price and how you do it?Will go to an agency of big cars will choose one of the cars that you think you...