Hi,
Congratulations on your book. It is quite commendable to write one. I have written some too. One is being sold at ebay and the other is online at
http://www.horsecaringmadesimple.comTalking about online publication, I must say it is a lot cheaper than offline publication. Moreover, it enables you to test the popularity of the book. If the popularity is high, you will receive offers from publishing firms and that means more money for you.
In a nutshell, these are the steps to online publishing:
1. Convert your book to a digital downloadable format like .pdf or .exe
2. Register a related domain name $1-8 per year.
3. Design a minisite for it.
4. Write an order pulling sales copy.
5. Host your book and minisite.
6. Market it. Otherwise you wont make any sales.
Search around the internet, you will get information on free pdf writers etc. There are also sites that offer free hosting but it doesnt look professional. However if you are operating on a budget, you may use them.
Good Luck
Chionle