cars are pretty much a necessity, unfortunately, due to the fact that MARTA is such a joke and southerners never really got the hang of city planning (i kid! i kid!). the shuttle routes can be found here: http://transportation.emory.edu/
(i can't vouch for any of them because the only shuttle i ever took was the C shuttle). off the top of my head i'd say the four closest complexes to clairmont campus/C route are highland lake, lincoln at decatur, gables montclair, and the tall one on the corner of clairmont road and desmond drive (can't remember/find the name of it right now -- super helpful, i know). and i honestly can't think of any buildings near the law school, so i am little to no help there as well. good luck!