Here’s what I would do:
a: Register the name - then you’ll be sure what it is
b: Sign up for hosting, they’ll need to know the name from “a”
c: Go back to the registar and give them the DNS IP addresses you’ll get from the hosting co in step “b”
d: Wait maybe 24-48 hours until the DNS info propages across the net and then you’ll be able to see your site.