What is "Proof Of Stake"?
Staking is the action of locking crypto coins/tokens (assets) to secure the network, and being paid interest for doing so. The Proof Of Stake algorithm uses a pseudo-random election process to select a node to be the validator of the next block, based on a combination of factors that could include the staking age, randomization, and the node wealth. Significant advantages of PoS include security, reduced risk of centralization, and energy efficiency.
How to "stake"?
Choose your coin, go to the official website and download the wallet. Install it, launch it, and wait for Blockchain to sync properly. Once it is done, click on Settings and choose "Encrypt wallet". Choose a very strong passphrase which you can remember (important). Restart the wallet. Go on "receive" tab and create an address. At cryptocurency exchange, make a withdraw on your generated address. Wait for transfer and needed confirms. When you have the coin on your wallet, click on setting and choose "Unlock Wallet", type your passphrase and Enter. Congratulations, This is the end, You made it!! Keep your wallet open to Stake everything you can.