Stock trading is done at a stock exchanges, which are places where buyers and sellers meet and decide on a price. raditionally stock trading is done through stock brokers, personally or through telephones. Stock trading is affected by supply and demand. Online stock trading is considered one of the best ways for almost anyone to get in on the market. One of the best resources out there on the internet today for the investor looking to educate him or her self about online stock trading is http://www.cob2u.blogspot.com/. Online stock trading is all about selecting the best stock opportunities and following your buy and sell signals.Investor can trade shares through a website without any manual intervention from Stock Broker.