You are asking I bought a domain now what? You really need to build your website superfast.
But you need to follow a couple of things anyways, and the steps are very simple.
They are as follows:
- Buy a Web host [Compulsory]
- Link or Connect your Domain to the Webhosting you Purchased
- Install the Perfect Platform your Blog [I recommend wordpress]
- Get a Premium Theme
- Configure SEO for your Blog or Website
- Write your Post and Create Necessary Pages
- Grow your Blog
Those may look so complex but I've expanded it here in the post below
https://tipsonblogging.com/2017/10/i-bought-a-domain-now-what-to-do/