Forex trading can be highly profitable, but it has also big risks. If you want to trade in forex is highly recommended that you learn and practice a lot.
In forex trading, just as in stock trading, somehow you have to learn how to predict the trend.
By learning how to do that, you can earn a lot of money. If you are not experienced be very carefull in forex.
In stocks, if you predicted the trend wrong, you can always wait till the trend goes the other way. In forex, because of the leverage, it is possible to lose all the money you started with.
A much safer, and also profitable way, is forex arbitrage trading.