well. no that was more a joke. FX is the best way to lose all your money if you do not understand what makes currencies move.
you can sign up for an oanda account on-line, and trade on there.
I would not recommend it, as you can make massive losses (get margin called) and lose everything in a matter of minutes.
to make a profit with banks, you will need to trade without physical cash as the margins are lower, but you need money to make the money. again, don't do it unless its extra cash you want to play with.