FX Trading - or Forex - Foreign Exchange Trading, is trading on currency pairs. This can be achieved in a number of ways, including spread-betting, CFD trading, or direct investment in the currency. Forex is always traded as a currency pair - e.g. GBP/EUR (British Pounds vs Euros) - and you can generally buy or sell depending on whether you feel a currency is going to go up or down. FX Trading is considered advanced and maybe not suitable for beginners as currencies can be volatile.