KDJ

it is a good indicator to know when to buy and sell. Combining with RSI, overbought and oversold points are useful clues in price direction. i also like to look at MACD and Bollinger to get clearer picture. not a single indictor is perfect,so, multiple indicators increases accuracy rate. I also, look at S&P index to know how the whole market moves; besides number of gainers vs losers counters. lastly, i like to monitor buying and selling statistic too. but, any breaking news will also significantly shift the sentiments. just my humble views :)