Can I buy ENS domain?

Could you please elaborate on the process of acquiring an ENS domain? I'm curious about the steps involved and any potential requirements that I may need to fulfill. Specifically, I'd like to know if there are any prerequisites for purchasing an ENS domain, such as owning a specific amount of Ethereum or having a certain level of technical knowledge. Additionally, I'm interested in understanding the cost of acquiring an ENS domain and if there are any ongoing fees or maintenance requirements. I appreciate your insight into this matter as I am considering adding an ENS domain to my crypto portfolio.