Ethereum mining is the process of maintaining the Ethereum ledger through solving complex mathematical problems. Miners are rewarded for their efforts with small amounts of Ether.
For example, when a miner successfully solves a problem, they are rewarded with a certain amount of Ether. This Ether is then added to the Ethereum blockchain, and the miner is rewarded with a certain amount of Ether for their efforts. The miner can then use this Ether to pay for goods and services or to exchange it for other currencies.