Based on its own Blockchain network and token LSK, Lisk enables developers to build applications and deploy their own side-chain linked to the Lisk network, including a custom token.
Lisk has delegate proof of stake system which means you can earn Lisk just by voting for delegates who share forged rewards with their voters. To be able to earn Lisk just by voting you will need to have your Lisk coins at official wallet at Lisk web wallet or at Lisk Nano wallet. This means you will not be able to vote if your Lisk is stored at exchanges for example.
Once you have the official wallet and some money on it you will have 101 votes available.
The size of your reward depends on the number of Lisk that you have on your account.