Internet Sacred Text Archive
This site is very much what the title says. It is an archive of online texts for anyone to view, without establishing nation or creed, to promote religious tolerance and scholarship.
You can read up about everything from myth and folklore to the major religions. If you want to read the Bible, the Koran, or myths about Atlantis-they are all here. On their main page, scroll down and you’ll find a listing of subjects to read about.
You can then choose what in that topic you would like to read. All this information is really well written and they will even give you titles of books on the same subject that you can read for more in-depth information.
All in all, this site is a gem.