Forex trading is the method of exchanging one currency for another - known as selling and buying currency pairs - based on predominant rates of exchange from the FX market. The FX market is the biggest all - embracing market, with close to approximately $6.50 trillion in currency traded per day. Because of the universal spread of trade, finance, commerce, FX market is usually the biggest and most liquid asset markets in the universe. Currencies trade against each other as exchange rate pairs. Among the many reasons why FX is an appealing market, including for beginners who are looking to benefit from a global market. FX is an reachable market, needing only small deposit for anyone to start trading in it. This market is open 5 days a week, 24 hours of the day, not open on weekends.