The Gutenberg Project:
Free public domain books to your hearts desire. If you are looking for a book and it is in the public domain, this should be your first stop. A little tip from me to you though. When you find a book and you are just about to download it. Go to Google, and do a search for the filename incremented by 1. For example I went to downoad treasure island and it showed the latest version was treas10.zip. If you go to Google and search for treas11.zip, sure enough it comes up. I had the same problem with Jo's Boys. I got version 10 which had a lot of problems and later found there was actually a version 12. So go to Gutenberg, find the file, and then go to Google and make sure there isn't a newer version.