All you need are candlesticks.
They tell a story.
You can learn to view them based on different principles however.
Get a good book on candlesticks to learn about candle formations like DARK CLOUD COVER and the like from a general perspective.

But if you want the best success, using candles or any other type chart, learn Eliott Wave Theory.
It will take a lot of time, but I have a perfect track record on FOREX after 5 years of stocks and options trading.

Elliott Wave/Fibonacci rules if you know how to use it.
It is natures law you know!

Good luck