After I buy a new domain, can I change the names and how to do it? How about the new hosting have a name or blank follow the name of domain? and how about CMS should follow domain or hosting name?
I think After u buy domain u can't change it. for hosting u must have a name same like your domain name.
After I buy a new domain, can I change the names and how to do it? No cannot change it. How about the new hosting have a name or blank follow the name of domain? When you have different domain name,you can still add it under the same hosting account by utilizing the addons domain feature.
few registrars allows refunds so in that case yes you can change the name of your choice if that available. ( usually within 5 days of registration )
All what you can do is cancel domain name registration during first day after registration. You will lose about $1. Then you will be able to register new domain name
If your registrar is Dynadot, you can find inside the control panel how many days are left before cancelling or changing the name.