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what do you recommand to me

I seriously recommend you not to take financial advice from unknown anonymous people in the internet. Take your time to study the market, read about the coins in their official sites and ask very specific questions on the forums. The internet is full of ill intentioned people that would give you bad advice for fun. This guy you answered is one of them. Try to get as many information as you can and make the decisions on your own. Anything other than that is the easiest way to loose money.