How to buy a domain?
STEP 1: Finalize your domain name
STEP 2: Register domain
STEP 3: Decide your hosting providers - Register your host
There are two more steps that I skipped from the above action plan. Which is
STEP 0: Develop your website/service/product.
You cannot just launch your web site, for the sake of launching a web site. You must have a motivation which made you register a domain.
Remember, Motivation is what gets you started, habit keeps you moving.
STEP 4: Upload your website.