I hope this question is not bad one, but this has been something I have been having trouble understanding. How does time in the blockchain work, and how can I utilize variables like block.timestamp and the like? I want to be able to set a timer, then a certain function will become available for that address. Thank you in advance!

I hope this question is not bad one, but this has been something I have been having trouble understanding. How does time in the blockchain work, and how can I utilize variables like block.timestamp and the like? I am creating a faucet where the user can withdraw a set amount of ether, then they have to wait one hour before they can withdraw more.

Edit for duplication: I have looked at other explanations here on StackExchange, but it did not answer my question. I would like to know how time is passed on the blockchain, and with this knowledge utilize block.timestamp. I apologize if I was unclear. I am a beginner with creating Dapps, and want to learn! :)