I've read Brian Greene's "Elegant Universe" and most of Lee Smolin's "The trouble with Physics". I found them both to be decent books. Honestly, I like them because they did not go to in depth with any math. I've read other misc papers that have been posted here at PF, but some of those equations make my head hurt. :shy: I really like how Greene explained the basics of string theory but, I haven't seen anything that was a LQG/C book/article for the layperson. Is there anything that is available? free or not..