It's easier to generate interest on your idle crypto holdings than other investment strategies, like yield farming, as you just have to deposit and lock up your cryptocurrency based on the staking agreement. Even if you don't have enough crypto to operate as a solo staker, you can join staking pools and still earn a share of the staking rewards.
To participate in staking, you must hold a minimum amount of a specific cryptocurrency and run a node on the network. A node is a piece of software that communicates with other nodes on the network to validate transactions and add new blocks to the chain. The more your stake, the more influence you have on the network, and the greater the rewards you can earn.