Where can I go to self-publish a book?

Check out http://www.instantpublisher.com/. The other big ones are http://www.iuniverse.com and http://www2.xlibris.com/.

I just want to say, because it's in your interest, that many self-publishing operations offer little in support of the writer after publication. I know several writers, mainly in mystery and romance novel categories, who were thinking of self-publishing and decided to just "for the sake of novelty" send their manuscripts to editors. One of them ended up getting a four-book deal with Harlequin. While that may not wet a lot of people's whistles, I think it's admirable that she tried. There are thousands of publishers in this country and, if you did your homework you might find one or several that would be interested in your book. I knew a quirky guy in college that I wish I were still in contact with that I read about years later had been shortlisted for a major poetry award; when we were in college and I worked in the mailroom, I was constantly putting letters from vanity presses in his mailbox. I am happy to see people reach out with courage, rather than money.

Amazon.com has BookSurge and CreateSpace. I've used BookSurge and am trying to use CreateSpace, but I'm having the devil of a time getting the PDFs uploaded (and I'm convinced it isn't my fault). The product is a good one when completed.

Also, do read this http://ask.metafilter.com/78774/Who-will-print-and-sell-my-photobooks-and-pay-me-commission for some more places.

I haven't used it (or really explored the website in depth), but I've had http://www.wordclay.com/ ('DIY self-publishing for authors') bookmarked for months. I can't recommend it, but you might be interested in seeing if it's the sort of thing you're looking for.

...and Blurb has a "Set Your Price" that is open to authors outside of the US, just as they promised for Q1. The program to allow authors to share in the profits of sales of their books is in place as of early March 2008.

Here's a list of the major print-on-demand publishers (not endorsing all of these) WordClay XLibris Author House Book Locker (developed by the people at Writer's Weekly to be especially author-friendly) iUniverse Mimeo ArborBooks BookSurge I have seen books made from both services, and they are pretty comparable, All of these places use the same printer (Lightning Source).

Friend of mine just used Xulon (I think they are mostly for Christian books tho.)

www.bookcrossing.com have an authorcrossing feature now. If you join up, please mention that LyzzyBee sent you there! Good luck.