Some advantages of trading in NSE Nifty like Trader get margin to trade on nifty. Trader can do day trading that is intraday trading as well as carry forward till the expiry period of trader contract minimum one month expiry and maximum three month
If you feel that market is going up then you can buy Nifty contract and if you feel like that is market is falling then you short sell Nifty and later buy it to cover up your positions. Trader can square off at any time and at any price due to very high volumes are traded in nifty future contract.