The currency trading (FOREX) market is the biggest and the fastest growing market on earth.

The market
The currency trading (FOREX) market is the biggest and the fastest growing market on earth. Its daily turnover is more than 2.5 trillion dollars, which is 100 times greater than the NASDAQ daily turnover. (click here to read full market background by Easy-Forex?).
Markets are places to trade goods. The same goes with FOREX. The Forex goods (or merchandise) are the currencies of various countries. You buy Euro, paying with US dollars, or you sell Japanese Yens for Canadian dollars. That's all.

How does one profit in Forex?
Very simple and obvious: buy cheap and sell for more! The profit is generated from the fluctuations (changes) in the currency exchange market.
The nice thing about the FOREX market, is that regular daily fluctuations, say - around 1%, are multiplied by 100! (in general, Easy-Forex? offers trading ratios from 1:50 to 1:200). If, for example, the exchange rate of "your" pair of currencies increased by 0.6% in the last 4 hours, your profit will be 60% on your investment! Such can happen in one business day, or in a few hours, even minutes.
Moreover, you cannot lose more than your "margin"! You may profit unlimited amounts, but you never lose more than what you initially risked and invested.
You can implement your choice (the pair of currencies, the volume amount) under any direction to which the market is moving, and yet make profit. It does not matter whether the exchange rate is going up or down: you can always decide to buy Euro and sell dollar, or vice versa - buy dollar and sell Euro. You don't have to physically possess certain currencies in order to perform "buy" or "sell" with them.

How do I start?

Read more at Here:
http://virtualdistributor.blogspot.com/2008/10/currency-trading-forex-market-is.html