How can I start up my own online business?

I've been selling on Ebay for awhile now, been rather successful however I don't like the seller fees, its rather ridiculous. So there has to be another way and I figure thats to start my own website/online business. So how do I go about doing that? How can I make my own page and then advertise? Is there a helpful website (relatively cheap) that can guide me along? I have a really good product but would like to do this on my own.

This will help you
http://bdjob.blogspot.com