Forex trading is an investment where you pit one currency against the other. You obviously think that the currency would do better than the other in the coming period. This may or may not be the case however and the result might be a huge loss.
People use Forex price charts to get them enlightened with the positions. For laymen, bar charts are available with normal level representation on bar graphs. The Manhattan built is made on the graph and the highest point is obviously the currency zenith. This makes comparison easier.
Candlesticks are another graphical representation. Here you get the same rectangular designs on the graph but with colors in its inside. Red color indicates that a currency is falling while blue color signifies the converse. Thy make it easy for traders to take decisions, though again they should use their own discretion before getting involved in the trade.