This is not difficult to learn how to do it, but it can take a lifetime to master.
Cryptocurrency trading is so easy to get into that you can start trading with $ 1, don't be afraid.
sorry, but if you had read good theory on the subject, you would not be asking the OP's question, but a more advanced one related to the process of buying and selling cryptocurrencies.
We want to earn money without investing time in knowledge and even less investing with the confidence that we can take part of our capital to practice.
If you understood the basics of cryptocurrencies you would know that you can trade with minimal amounts, practice and maybe earn something in the process.