Many exchanges now offer the opportunity to trade using a demo account, but this is nothing more than a simulator or training. Trading with real money shows the fundamental component of trading - psychology. I think that today you can start trading crypto assets with a small amount of $50 or $100. If you start to get good at it, you can gradually increase this amount. Probably one of the most critical tasks for an investor is to keep his investments safe. Web wallets are the most popular among beginners and active traders. But when they need to sell bitcoins, they don't know what to do.