trading is easy
only buy in low price and sell to high price
but is very dificult can find to profit
recomended trading bitcoin pair altcoin poloniex and bitrex
if bitcoin pair fiat money is good btc-e bitstamp coinbase bitfinex
yeah it's indeed easy only if we can manage to always selling in high price and buying in low price (keep in mind you will also eventually found some coins which turning into dust immediately) but when it comes to real trading you will find so many problems and you will required to resolve these yourself,