For buying and selling of shares you need to open a demat and trading account with an NSE listed company. Investment in shares when done wisely and with expertise brings in the best profit. But then...
From the company itself in the very first instance of the shares being offered in a float. The word float is used when a company seeks to raise money by offering its shares to the public for the...
First and foremost you have to seek the advice of a stock broker;on the capital base or financial strength of the company,how they operate,how fast their shares appreciates e t c.
Your stock broker...