That is a problem. While there are many crypto exchanges that will let you trade alt coins with no more that an email address, they can't take fiat. But of course Bittrex does not let you buy with fiat either (although they seem to be moving in that direction). How were you planning on getting the original Bitcoin or Ether to trade? NOT ASKING YOU TO INCRIMINATE YOURSELF
Or did you just not know they don't take fiat?