Well it does not have much to do the trading with mining, mining is the process by which new cryptocurrencies are created within its blockchain, this is done through specific hardware which today has a fairly high cost, miners through a mathematical process and thanks to the computing power of the GPU and CPU solve a mathematical problem with which new cryptocurrencies are created and also transactions are validated on the network, it is a difficult process to explain, but if you want to make money with it, you're usually going to require a good investment.