Perhaps the biggest repository of free e-books, Project Gutenberg offers over 57,000 free eBooks in HTML, EPUB and Kindle formats. No fee or registration is required. It has the world’s great literature with focus on older works for which copyright has expired. Yes, this collection is absolutely legal to access as you will not get a e-book here, which is a copyrighted work. We must take a note of the fact that thousands of volunteers have digitized and diligently proofread these eBooks, for our enjoyment and education. We can also volunteer for the same on the web site.
The link to this learning resource is http://bit.ly/vnl0017.