Go to http://www.cafepress.com/cp/info/sell/books.aspx
. This is an inexpensive way to get a book published. Basically your only job is to market the book, but you don't need to purchase inventory. You purchase only what you need; cafepress gets their "cost" share, and you determine the profit above and beyond that by setting the selling price.
You can also set up a free account there to use as your website.