The minimum required Amount should be 0.01 bitcoin or lower. Because for me if you are a newbie I will suggest you to try trading with small value of bitcoin so that if you lose you will not lose many bitcoin. I will suggest this amount till you understand or master the trading. If you are good to trader now you should risk the bitcoin that you can afford to lose.. So that your income will be bigger than before. But of course not always you will gain profit. Sometimes you need to wait your coin til this pump.