What is DNS propagation?
When a new domain name is registered (or an existing one is transferred to a new DNS), the information must make its way around the entire internet. This process usually takes around 24 hours, during which time the domain will be inaccessible to many or all users.

I have a new domain name, but when I type the domain name into my web browser, I don't see anything.
The reason why nothing shows on your web browser is because the domain name has not been fully propagated by the Domain Name Server. Your domain name should be up within 24 hours after registration.