Online currency exchange or forex trading is growing like wildfire. It attracts a big number of beginners who need to make extra money from home. Mostly they have seen adverts about the amount of money that may be made in this trillion dollar market. If it falls, you lose. Most traders do not try to monitor the values of all currencies at the same time. There are around 150 currencies altogether, so that the possible combos are in the thousands. Most traders concentrate on just one or two of the major currency pairs. These involve the US dollar with the EUR, Japanese yen, British pound, Swiss franc, Canadian dollar or Australian dollar. You can trade foreign exchange from virtually anywhere in the world, although there are some countries such as China where online foreign exchange isn’t legal for political reasons.