I just wanted to urge everyone to visit wowio books.
It’s a webpage with full and legal copies of books, categorized and formatted meticulously. Unlike some of the more popular free book service like the Project Gutenberg, many of the books provided wowio aren’t copyright expired classics. There are some gems in there, so anyone with a remote streak of bibliophile in them should take the time to shop around.
I just hope they get more science related books in there, as well as some of the rarer fictions like The Thackery T. Lambshead Pocket Guide to Eccentric & Discredited Diseases, but the books they already have are still worth taking a peek.