Staking in General
Currently, there are a lot of blockchains worldwide, and all of them need some kinds of users' participation to provide consensus.
The consensus protocol is a mechanism that allows blockchains to validate and approve or disapprove data and transactions before storing them to make blockchain faultless.
To start staking coins, you will lock up your coins or tokens to help verify transactions for cryptocurrencies with Proof of Stake consensus mechanism. Stakers earn staking rewards for providing this service.
However, a choice of professional staking services could not only removing all technical hassles but also supporting you in case you have questions and share rewards with stakers. Just find yourself a pool and delegate your stake to it. Then you are staking!