A domain name is like a house address. Your house address is your physical address. Similarly your domain name is your address in the internet world. For example www.google.com is a domain name. You can type this domain name in your web browser (such as chrome, internet explorer, firefox, safari etc.) and the Google page will be opened.
Every domain name is unique in the world. A domain name has following three parts, separated by a dot (.):
1. A domain name usually starts with www, which is a short form of World Wide Web. Then there is a dot (.).
2. Then comes the main domain name, like google. Then there is a dot (.).
3. Then comes the tail of the domain name, which is like an extension of a file on computer. Example: .com, .org, .net, .in etc.
You have to buy a domain name from a website, which is authorised to sell domain names. some of such domain sellers are:
If you want to buy a domain name you need to sign up an account on the website of these domain sellers. Then you have to check on these websites whether the domain name you want is available or not. If your desired domain name is already purchased by someone, you need to choose another name. If your desired domain name is available, you can buy it online.
Once you have purchased your domain name, you can go to the next stage, which is getting a host. You can also buy both the domain name as well as hosting service from the above named websites.