Once when you start live trading all that you learned becomes something else
Decision making is not what you can learn from other - it is you, yourself and you when it comes to deciding what to do in trading. And decision is what makes trading a trading or "trading"
I agree that you make the decisions, but how do you know how to make them? There is no reason to reinvent the wheel and learn bad and good decisions by trial and error. Watching (and asking) how someone else does it is a good way to hone your own instincts by putting up barriers to doing stupid things (out of ignorance).
It is very possible to make money that is why there are so many traders and investors in forex. The forex market is liquid and is open for 24hours. Any new trader who want to make money in forex needs to acquire the needed information and knowledge of forex and also practice with a demo account before trading live and involving real money because aside from being profitable it can also be very risky too.
Forex is NOT a zero sum game
Yes its possible. Swing Trading. Day Trading is the worse possible way...hence 95% failure rate.
No, its not a zero sum game, but it is better than roulette I guess.
It is not a zero sum game only for central banks. All the others are on the minus side
if you can manage your risks, then yes it's possible, people lose most money because when they lose, they don't cut loss.