How to get ens domain?

As a keen observer of the cryptocurrency and blockchain ecosystem, I'm curious to understand the process of acquiring an ENS domain. Could you elaborate on the steps required to obtain one? I've heard that ENS domains are a crucial component of the Ethereum Name Service, which allows users to replace complex wallet addresses with human-readable names. However, I'm not entirely sure where to start or what factors I should consider before making such a purchase. Your insights would be invaluable in guiding me through this process.