If you want to learn how to scalp I'd make sure your very confidant and quick with the execution of trades and closing of trades in case it goes wrong.. first and have a basic understanding of how the fx market works.
Don't listen to the keyboard warriors about 1 - 5 min time frames as you will get caught out ..
Start on a 60 min chart and when a closed candle high or low breaks aim for a couple of pips + our costs, spread etc .
as the container of a 60 min is a lot stronger than a 5min chart... this is not the complete system but will help you get a feel for it..
Trade pennies but real funds and build your psychology up.
See pic for example..