Light and Matter: open-source physics textbooks. Einstein for Everyone. Einstein for Everyone Nullarbor Press 2007revisions 2008, 2010, 2011, 2012, 2013 Copyright 2007, 2008, 2010, 2011, 2012, 2013 John D.
Motion Mountain - The Free Physics Textbook for Dowload. 20 Places to Find Free Books Online. The following is a guest post by Bailey Harris.
There are many different sites offer free books online. Within minutes, you could find enough reading material in the form of e-books and audio books to keep you and your family entertained for months, if not years. Free Technical Books.