for scaping using successfully first of the thing you have to choose a right broker which for all time make sure good environment for using scalping by providing 0 pips trading spreads.
when it is time to learn of course you have to trade in a demo , its the master place to become knowledgeable , but i have seen traders generally dont believe the importance of demo account.
risk is everywhere in Forex its a very common thing , there is no one who can deny but if you have proper money and risk management then within a very short time you can bring good amount of profit from here.
actually making profit is not a big deal in Forex trading , the main things in there to keep consistent level which is the main challenge . anyone can make profit by one or two times.
having a losses is very common attitude and there is no one who can avoid it in spite of having most powerful analyzing trade knowledge and experience.
when i was a beginner i was profitable in demo account but when i started a real account i did loss huge and huge at the end of the month i lost whole equity.