i am aspirant for CSS 2015 exams, since i have just started preparation but problem is with certain courses which are too much lengthy like EDS and i have very little time to do with these, some friend suggested me to prepare for topics from past papers because these keep repeating, but i found that very few topics were repeating.
so seniors please let me know should i go for selected topics? if yes, then how should i opt for topics to study.