Mining is a way of earning crypto currencies like BITCOIN or ETHEREUM. All you need to do is to leave your computer on to help support the systems. These systems use your CPU and graphic card power to make mathematical operations to keep the cryptocurrencies on.
Some mining systems require expensive devices to mine. Some other just use your computer technical components to get residual income from pool mining.
First thing you need is to create a wallet to store your earnings. GENERATE YOUR WALLETS HERE