The key to the FOREX market for the average investor is the margin. Without margin trading currency trading would be beyond most investors. I will explain what the margin is and how it works.
When you have a margin account you are able to control large amounts of currency with a relatively small cash deposit. When you have a margin account with a broker you are in effect borrowing money from the broker to control a larger lot of currency. Currency is normally sold in lots with a value of $100,000. A common term used when discussing margin accounts is leverage. Leverage is how much you can control with a certain amount of money. The leverage is usually displayed as a ration such as 1:100. That would allow you to control currency worth 100 times the amount of money you have invested.
To better explain this in a FOREX exchange with a 1% margin account you could control $100,000 worth of a currency while only investing $1000. Margin accounts can allow you to greatly increase your profit; they also allow you to increase your risk. With a margin account it is possible for a trader to lose more than their initial investment. With a little prudence though losses can be...