Purchasing my own domain was not difficult. I purchased it from Hover. But after that, I thought pointing my domain to web hosting account meant transferring it. When I tried to transfer my domain to Bluehost, the following instruction popped up.
The domain miyazakinorihide.com was registered within the past five days with another registrar (Tucows.com Co.). You will need to wait 60 days before trying to transfer. Some registrars allow deleting the domain within 5 days of signup. If the losing registrar supports this, you may be able to delete the domain and signup for the domain here immediately. Check with the losing registrar (Tucows.com Co.) for details.
I was confused and asked how to do Prof. Smith through his blog. According to Mr. Smith, pointing and transferring were different and I did not need transferring it. After logged in Hover, I changed name servers from “ns2.hover.com / ns1.hover.com” to “ns1.bluehost.com/ ns2.bluehost.com.” I still do not understand what I did, but my posting my domain seemed to be successfully done.