The next thing probably to do is to get yourself a domain name. I know that in Australia, .asn.au and .org.au are free. In the United States, you can get a .us domain for free, but they tend to be long. To register domains you need to be able to provide DNS services, and gorey stuff like that. If your ISP can't provide these, throw out an official .asn.au or whatever domain out the window, and get a Monolith Internet Domain.
Monolith offer free domains to anybody and anyone all around the world.
Everything is done without human interaction, via a web forms interface with your browser. Monolith will then host the DNS locally for you. If you want to send and receive mail from that domain, ask your ISP to become a mail exchanger for you. You'll need to enter your IP address, so have that ready. Your domain will be in the DNS in a couple of days.