When learning how to trade Forex online you should look to how professional traders invest their money.
Ask yourself the following questions:
How did they become successful traders on the Forex market?
Are they day traders, or swing traders? Are they fund managers, or are they professional traders trading for themselves?
What are the best Forex strategies they use in order to trade successfully?
How did they realise that their trading strategy worked with the current market conditions?
How did they adapt their trading systems to changing market conditions?
What are their actual trading techniques to make their trading performances consistently profitable?
How did they develop good trading habits?
These questions will help you think about your situation to understand how to make money on Forex – what to do, and what not to do. Learning how to develop a profitable Forex strategy to achieve Forex success is the must-have tool to make money trading.
Of course, having a Forex strategy that is profitable is useless if you’re not aware of the psychological biases that push you away from actually using your trading system.  
So, let’s review how you can develop a winning Forex strategy that you can stick to.
Steps to develop your winning trading strategy
Determine which kind of trader you are
Choose which trading style suits you best
Describe your method to of entering/exiting the market
Define your risk
Back and forward-test your system
SCALPING AND DAY TRADING
These two kinds of trading are the most active and aggressive type of currency trading, as they both imply that all your trading positions will be opened and closed within the same trading day.
Day trading targets more pips and positions can be open for a few hours.
Scalping trading in the FX market is about buying and selling currency pairs with a target of a few pips, held for no more than a few minutes (or even seconds). Day trading targets more pips and positions can be open for a few hours.
These trading styles work with very short-term trading strategies and increase returns. Leverage is often used, which means that there is a greater risk of large losing trades.
Both strategies can be stressful and require being able to stay extremely focused and available in front of the charts to make (very) quick profits.
Scalping and Day Trading is for you if you:
Don’t like to hold your positions overnight, and prefer intra-day trading
Like to know if you earned or lost money at the end of your trading day
Tolerate a certain level of risk
Are available to be in front of the market and quickly react to trading potential opportunities
Are stress-resistant
Like fast paced trading
Swing Trading
This trading style is a longer-term approach based on taking advantage of changes in the momentum of a currency pair within a main trend. 
It’s often considered a continuation of day trading towards position/trend trading, which is a trading style following the long-term trend of an asset.
Swing trading requires a lot of patience, as you’ll be holding your trading positions for several days or weeks. It’s ideal for part-time traders, as they don’t always have the time to analyse the market.
Swing Trading is for you if:
You don’t have much time to spend in front of the screen(s) every day
You can hold onto your positions for days/weeks
You can’t put up with high stress and aggressive trading
You can’t deal with fast moving environments
When figuring out which trading style best suits your personality, you need to take into consideration all of the following elements: your current schedule, your attention span, and your risk aversion.
Consequently, you need to match your selected time-frame with your lifestyle and personality.
With swing trading, you may stay in position from a couple of days to a few weeks, while using 4-hour to daily charts. With scalping and day trading you will stay in position anywhere from a few seconds to a day, using anything from 5 min to hourly charts.