What is the first step necessary to begin setting up a website once a host has been selected and paid

First step after purchasing hosting is selection of domain name.

Explanation:

To setup a website there are few many steps including select and pay for hosting. After selection of website hosting next major steps is to select the domain name. So we can say that domain name is the first necessary step after purchasing the hosting.

Domain name is like the address of the website. As after each home has its unique address to access it easily, websites also have addresses named as domain name to access easily.