The best way to be safe is to earn ample amount of knowledge regarding Forex Trading. You need to learn how to trade with Forex. The best way would be through Demo Account.
I have done it quite well, but then also I need to practice more as it is just a demo and our decisions in it doesn't cost anything like that in real account.
I don't think trading is that simple. It requires very much knowledge, and also it needs much practice. Thus we do trading through demo account at first.