To trade safely we have to go for perfect trading instruments which yields risk < reward it is called business. trading with knowledge and disciple is source making profit in stock market. SEBI defines the rules and regulations for all entities in the stock market and resolves any issues that may arise in the market. Govt regulates the SEBI. trade will excute at current market price only. stop loss order define your risk level(manully set). for long time trade go for positional trading where as short time go for intraday trading.