My friend loves opening different trades at a time, most at times is difficult for him to control what's should be. Trading on free chart with multiple opening can be very dangerous. Yesterday he experience unusual hit when bitcoin price drops again, four trades loss at once when the market go against him. Personally I don't advise multiple trade especially when you're not familiar with trade
The first question I will be asking is if your friend is a newbie? If he is a newbie then I will advise him to stop opening multiple trades because you will easily get confused. Also I think your friend should have set stop lose in four trades he opened, incase if the trade goes against him, it will definitely reduce the amount of money he will be losing. Your friend shouldn't be in rush, you don't have to open four trades before you can make money, one trade is also enough, just make sure you do your analysis well before entering a trade.