Buying a Domain
Say you want to build a house. Before that you will need to buy a plot (land) where you will build the house.
Similarly, if you want to build something that people can see on internet, you will have to buy some space on internet.
This space is domain
.
To purchase plot, you need to make registration at registrar office and pay stamp duty fees.
Similar is the process of buying a domain.
To buy a domain, you need to go through domain registrars (GoDaddy, NameCheap, Hostinger, …)
Check the avaialbility of domain name that you want to purchase. If it’s available, you can purchase by paying appropriate domain fees.
And that’s how you have taken your first step of availability on internet …