hosting
Your site needs to sit on a server. I can take care of it for $75au/year* or you can choose your own company to host your site.
I use servers in Australia or America, depending on where most of your visitors will be from so your pages will load as quick as possible.
I use VentraIP in Australia and GreenGeeks in the US. Both companies offer green offsets for the energy their servers use to host your site, which may not save the earth but it's better than nothing.
About free space
Free web space from your ISP is fine but you won't have your own domain name.
Small print
* If you're going to offer files or music or video for download or if your site needs a lot of space it may cost a bit more, I'll let you know early if I suspect this.
Also if your site becomes very popular it will cost more - every visit to your site uses some bandwidth which isn't free, so if millions of people are visiting your site it will cost more to host.
You have to choose your domain name...
