[Updated Feb. 13, 2013 & Dec. 10, 2014]
When I first answered this question, crowdfunding was still a new idea. (Crowdfunding is when you request donations from lots of people, usually online, and usually the donors/backers receive some type of perk based on the amount of their contribution.)
You don’t really get money for nothing: You’ll need to make up a persuasive package and, if your project is funded, distribute any rewards that were promised.
See Wikipedia for a comparison of crowdfunding sites.
There is no fee to have a book published if you go the traditional publishing route. The publisher pays the author.
You may be thinking of using a subsidy publisher (sometimes called a POD publisher or self-publishing company; both are misnomers) or of self-publishing. A subsidy publisher makes money by getting authors to buy its services. You should not expect any support beyond delivery of the books you purchase.
If you self-publish, you are responsible for purchasing your ISBN and arranging the editing, design, typesetting, and printing. You are also responsible for marketing and distribution.
Here are some resources to help you get started. You might also check out the Independent Book Publishers Association and any publisher associations in your local area.