MidasTouch,
For positional trading :
Any stock that makes higher high is only a buy.
Any stock that makes lower low is only a sell.
Ofcourse, its not that easy, as the important question is about the entry. If buying a high in an uptrend, one can get stop lossed in retracement. So the ideal entry for a buy is a green candle after a touch of 20 EMA, closing above the average.
See attached images.
http://img11.imageshack.us/img11/5926/01auro.jpg
http://img811.imageshack.us/img811/1193/01zee.jpg
Also take note of increased voulme.
Reverse of the above is true for shorting. Sell a stock making lower low, but again entry will be when the stock touches pullback to the 20 EMA.
Trust this is of help.
Good luck and happy trading.