Candlestick  charts are very popular among traders.  Similarly to a bar chart, every  candlestick on the chart represents all price action information for  that period.
For example for 5 minute charts, every candlestick on the chart represents 5 minute period for that trading session.
The price at the tips normally called the wicks or shadows represent  the high and the low at that 5 minute period, like the bar chart.
The body of the candlestick represent the open and close of that period.
- If the open price is greater than the close price it is normally shown in green.
- If the open price is less than the close price it is normally shown in red.
- If the open price is equal to the close price it is very important candlestick pattern called the doji. This indicates indecision in the market and a good indication for price reversal. We will explain chart patterns in our advanced technical analysis course.
Similarly if you switch the chart to 1 minute, every candlestick  represents the price action for that 1 minute period with the high, low,  open and close prices.  This is the same for all currency pairs.
Also if you switch the chart to 1 hour, every candlestick represents  the price action for that 1 hour period with the high, low, open and  close prices.  This is the same for all currency pairs.
Last but not least if you switch the chart to 1 day, every  candlestick represents the price action for that 1 day period with the  high, low, open and close prices.  This is the same for all currency  pairs.
Similar to bar charts, which time frame to use depends on your  trading style.   Being a scalper you will definitely use 1, 5 or  15minute charts.  Being a intraday trader, you will probably use 1 hr,  4hr and 1 day (yes to  draw trend lines), and for day traders you will  definitely use 1 day or more time frames.
 
