An investor can profit from the difference between two interest rates in two different economies by buying the currency with the higher interest rate and shorting the currency with the lower interest rate. Prior to the 2008 financial crisis, it was very common to short the Japanese yen (JPY) and buy British pounds (GBP) because the interest rate differential was very large. This strategy is sometimes referred to as a "carry trade."
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Secondly, a larger return is needed on your remaining capital to retrieve any lost capital from the initial losing trade. If a trader loses 50% of their capital, it will take a 100% return to bring them back to the original capital level. Losing large chunks of money on single trades or on single days of trading can cripple capital growth for long periods of time.
Use a stop loss: A stop loss is tool that traders use to limit their potential losses. Simply put, it is the price level at which you will close a trade that isn't moving in your favour, thereby preventing any further losses as the market continues to move in that direction. You can also use a stop loss to conserve any profits you might have already made - the tool to achieve this is known as a 'trailing' stop loss, which follows the direction of the market.
Once Nixon abolished the gold standard, the dollar's value quickly plummeted. The dollar index was established to give companies the ability to hedge this risk. Someone created the U.S. Dollar Index to give them a tradeable platform. Soon, banks, hedge funds, and some speculative traders entered the market. They were more interested in chasing profit than in hedging risks. 
Currencies are traded against one another in pairs. Each currency pair thus constitutes an individual trading product and is traditionally noted XXXYYY or XXX/YYY, where XXX and YYY are the ISO 4217 international three-letter code of the currencies involved. The first currency (XXX) is the base currency that is quoted relative to the second currency (YYY), called the counter currency (or quote currency). For instance, the quotation EURUSD (EUR/USD) 1.5465 is the price of the Euro expressed in US dollars, meaning 1 euro = 1.5465 dollars. The market convention is to quote most exchange rates against the USD with the US dollar as the base currency (e.g. USDJPY, USDCAD, USDCHF). The exceptions are the British pound (GBP), Australian dollar (AUD), the New Zealand dollar (NZD) and the euro (EUR) where the USD is the counter currency (e.g. GBPUSD, AUDUSD, NZDUSD, EURUSD).

If the velocity of your trades necessitates low fees, know that you will be sacrificing some educational resources in favor of a streamlined system designed for the pros. You’ll be jumping in with both feet. On the other hand, a low minimum account typically comes with the educational resources and communication channels required by new forex investors. The identity of different brokerages rest on the type of investors they aim to appeal to. Choose accordingly.

Ready to learn how to trade Forex? The pros at Online Trading Academy are here to help! The foreign exchange market (also known as forex or FX) is one of the most exciting, fast-paced markets in the financial world. Though historically, forex has been the domain of large institutions, central banks, and high wealth individuals, the growth of the Internet has allowed the average individual to become involved with and profit from online currency trading.
Set your limits in advance: Before embarking on any Forex trade, you should have defined the price at which you'll open the trade, the price at which you will close it and take your profits, and the price at which you will close it, should the market turn unexpectedly, thereby cutting your losses. Then, once you have set those limits, it's important to stick with them!
Forex is a portmanteau of foreign currency and exchange. Foreign exchange is the process of changing one currency into another currency for a variety of reasons, usually for commerce, trading, or tourism. According to a recent triennial report from the Bank for International Settlements (a global bank for national central banks), the average was more than $5.1 trillion in daily forex trading volume.