Know any website where you can download free books?

I need a website where I can download free books just like people download free music and I also don't know how to add the books to my iPhone!

Http://www.baenebooks.com/c-1-free-library.aspx

http://www.gutenberg.org/

Library has free downloads. Get a library card.
GuttenbergProject.org

I'm too having same problem can any body help?