When one talks about forex market it basically includes all the countries of the world. It is all about currencies of all the countries. Money from all over the world is traded, sold and bought. The value of currency fluctuates every time. When dealing with forex market, it is possible to buy the currency of other countries and then sell it. This is how the profit is made in forex market.
A smart way of handling forex market can help you to bag huge amounts. Knowing about different currencies of different countries is also important in forex market. Once you have all these knowledge you can earn whatever you wanted to earn.