Trading – It is a Business only when we do it with knowledge and discipline otherwise it is a gambling.Stock trading can done through Exchanges via broker for the list of companies.Exchange controlled by SEBI. In trading there are two types i) Intraday- Here we have to buy or sell share on the same day ii)Positional Trading- Here we can bought shares today and sell it on another day.While buy or sell a stock depends on determining the risk ,return demand and supply.A good trader gets a good returns with minimum risk by analysis. when stock price increases or decrease will not affect the company performance.