When you start trading, don't think of the money yet. Think of how to trade. Read some reliable articles or reviews about trading. Choose one trading platform. Perhaps you consider those that have large volumes and many traded coins. Create an account and study the different movements of the prices, buttons and what they mean, and so on. Only after exploring that you then deposit a little amount. You may start with .1 or even .09 BTC or 1 ETH.