eToro is a social trading network where you can trade currencies, commodities and indices in their respective markets. A trader's goal is simle: make a profit off the movement of the price of a certain instrument (a currency pair such as EUR/USD, a commodity such as Gold, or an index such as the Dow Jones). In order to do that you need to buy low and sell high, or sell high and buy low, depending on the direction you think the price will be headed in.