Stock market is a place where buyers and sellers meet to buy a product. The product used in share market is shares. Anyone can buy shares from share market provided they comply with Exchange rules. NSE and BSE are the biggest exchanges in India. The respective index is Nifty and Sensex. IPO is issued by the company before listing in stock market. After the listing is done, the shares are then traded in secondary market. Shares can be bought in apiece or in bulk in respect to the capital we like to invest.