The service of the broker you choose, and the platform they offer, is essential in ensuring that you achieve the best trading results. If you were trading on a system that was slow and regularly crashed, for example, you might not be able to enter or exit a trade at the price you want. Instead, it's important to look for a broker that offers high levels of liquidity, low spreads and the ability to execute orders at the price you want (or as close to this as possible).
Second, since trades don't take place on a traditional exchange, you won't find the same fees or commissions that you would on another market. Next, there's no cut-off as to when you can and cannot trade. Because the market is open 24 hours a day, you can trade at any time of day. Finally, because it's such a liquid market, you can get in and out whenever you want and you can buy as much currency as you can afford.
Unlike stock markets, which can trace their roots back centuries, the forex market as we understand it today is a truly new market. Of course, in its most basic sense - that of people converting one currency to another for financial advantage - forex has been around since nations began minting currencies. But the modern forex markets are a modern invention. After the accord at Bretton Woods in 1971, more major currencies were allowed to float freely against one another. The values of individual currencies vary, which has given rise to the need for foreign exchange services and trading.