I believe there is a site called Lulu.com (or .net or .org--not sure which), that is an online publisher of self published books. Their rates are supposed to be reasonable, and I believe they have a number of different ways to help with selling the book. They also handle publishing of other media also, like music, and videos.
I think I first heard of Lulu on the Clark Howard radio show. He helps people with financial and scam advice. Another similar show is the Dave Ramsey radio show. They are both nice guys who do a lot to help people get out of financial trouble, and some legal problems, also.
Check out Lulu.com and those two radio shows. I know Clark Howard has an interesting and helpful web site, and Dave Ramsey probably does, too.
Good luck with your book, and your writing career!
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau