I'm watching first and second semester undergraduate level quantum mechanics on-line (MIT Open Courseware). I am enjoying the lectures, but I'm not doing the homework or the math, just getting familiar with the concepts and tools. As I go through the open course ware, I'd really like to be taking a layman level look at what is going on conceptually in the field of quantum gravity at the same time. I'm a retired layman science enthusiast and don't expect to achieve any great level of understanding, but I am interested in quantum gravity lately from the standpoint that I wonder if there is some physical mechanics underlying it, not just the mathematics of spacetime. The same question comes to my mind about the unexplained aspects of QM. Shouldn't there be some physical mechanics going on when states are in superposition, or to explain the so called "spookiness"? Also, who would recommend how a retired non-science professional (accountant) could get an idea of the current work being done on Quantum Gravity Theory, in a form of science media that a layman might be comfortable with?