confused !!! plz help !!

hey.. im literally confused about the books .. coz i have already given an attempt in last may ..

now i have d.s rawat 2011 edition

auditing vk agarwal june 2010 edition

law also july 2010 edition..!!

im planning to take new study material .. should i purchase new additions of the above subjects or not ??

plzz reply at the earliest !!

:((