One strategy is follow the trend, enter when the stock hit the lower end of the trend line and exit when it hits the top of the trend line. Another strategy I use is to trade when a stock bounce from a support, and sell when it hits my target price or if the stock falls back below the support as...
I like to use Candlestick patterns a lot, like the bullish engulfing and bearish engulfing reversal patterns. But it is always better to combine them with other technical indicators.
You can do it with many online stock brokers like optionshouse where they offer a virtual trading platform that's exactly the same as the real platform except you don't use real money.