So I have to buy on exchange than send to the wallet, connect wallet on the site than stake ?

This is a guide to staking: How to stake eGLD Please watch out for scammers pretending to be admins, no admin will ever message you first 1 eGLD min, you can download www.maiar.com to stake, or use the webwallet wallet.elrond.com You can read all about the Staking providers here ElrondPartners.com, you can also use the bot @ElrondNetwork_Bot and it will tell you the status of the providers and when space opens up with other providers. Ideally you want a provider with , high apr and that is named. See the Staking guide here https://youtu.be/XHlE8h8kBv4 The fees are already included in the apr rate Info on Dex here https://youtu.be/EnP8xgK5eJw