Your business needs a website, and every website has two parts: The hosting (the server that the website is located on) and the domain name (the thing people type into their address bar to go to your website). If you don't already have a domain name for your business, maybe now is a good time to get one.
In this tutorial video, I show you how to use hover.com (one of my favorite domain registrars) to buy a new domain name. I walk through all the steps and actually buy a domain name in the video, so you can see exactly how it works: