Some meet me and we were have conversation on trade and he told me that he has putting all he has been saving in it and asked me if he can make something out of it and I asked him if he had any knowledge about it and he said no.
I think it's better you go back and meet the person and tell him not to start trading with everything he/she is having. Firstly in Cryptocurrency always invest or trade with any amount you can afford to lose, even if you are a professional always investing what you can afford to lose, so I believe a newbie should be extra careful, if you want to start trading as a beginner, you have to trade with just little amount, I see no reason why you should trade with all your savings, that's rubbish.
My question is can someone that doesn't have any knowledge about trading and how the system work can he or she trade.
I think you don't also know about trading, if you really know about trading you should know the appropriate answer to give the person and you don't have to ask the question here again. A newbie can definitely learn how to trade, but he/she should be ready to learn, also he/she should trade with just little amount. We a started as newbie, even professional trader's started as newbie.