I have read and heard that one can earn and make good money with trading bitcoins.I also want to give it a shot.Everyone says the basic rule of trading is buy low and sell high but I am confused because which ever exchange I try,the buy rate is always higher than sell rate.How can one profit if sell rate is less than buy rate.If I buy at $390, the sell rate is $380
you shouldn't care about that, if you want to get profit, you shouldn't sell them at tiny price, because you will only lose money that way, you just have to wait for good price rise and sell then, would be dumb to sell for such a low price