After registering, you have to find a web host and create the account with them for the domain name that you registered for.

Then, upload your html files if you have any. After that you have to return to your domain name registrar with your Web host's DNS server primary and secondary host names. Remove the old ones and add the new ones.

Finally wait from 1 to 6 for all this updating to circulate throughout the Internet. You should now be able to receive e-mail and page hits.