A lot of local libraries (even those as part of a consortium) offer ebooks and audiobooks. I have come across a few consortiums in my state that only offer audiobooks. Use this overdrive link
http://search.overdrive.com/ and search by state to find your local library. It will give you a further link to the consortium that your library belongs to. If you already have a library card you should be able to proceed checking out books (some web sites require a password).
If you have a Sony Reader then you will want PDF format. If you have a Kindle then you will want Mobi format. If you need further help please let us know.