Help! Anyone …

I need someone to explain, step by step preferably, how to add a domain name to my next and final micro.blog blog. Do I create the micro.blog first, using whatever name, and then, add the domain name after? And how exactly do I add the name, since I cannot find anything about nameservers for Micro.blog so that the domain name will point to MB.

What am I missing? Knowing I’m probably misreading the instructions … again!

Thanks!