I will suggest you the following
1 look for the stock with high volume.
2 try to analyse the sector to which moved along with nifty
3 find out a stock from the sector which followed the trend of the sector.
4 next day see the market trend. If it is bullish buy the strong stock and if bearish sell the weak one from that sector.
strong and weak r comparison to nifty. say nifty 1% fall, 1stock 2% down ,so weak.STOCK b ,sameday move 1% up,-so stock b= strong.
for gen comparison u can use icharts