http://www.learnoutloud.com/ (Audio BOOKS, BUT NOT FREE, still you can find some free books...)

http://englishtips.org/ (books and tips and stuff :)

http://www.online-literature.com/

http://oneminutebookreviews.wordpress.com/

http://www.howtobooks.co.uk/home/ (PRACTICAL INFO)

http://www.about.com/