Stock Market is a place where people unite together in selling and buying their respective stocks. The person selling a stock is a seller and makes an ASK position. The person buying a stock is a buyer and makes a BID position. SEBI stands for Security Exchange Board of India. It ensures equal safety and security for both the exchange and the trader to achieve highest transparency in the trading process. Share Holder is considered as a part owner of the company. Any person buying a share of a company contributes to owning it. Promoter, as the name justifies is who aids the share buyer in buying the ownership of a company. Director is the one who runs the company.IPO stands for initial public offering. SENSEX is the name given to denote the growth and performance of the BSE. NIFTY denotes the overall performance of the NSE.