which course is easy to prepare for CSE exam after 12
Hello,
If you're enquiring about Civil Service Examination, then there's nothing as such easy course this exam is the most prestigious as well as highly competitive more so because every year a beginner competes not only with the first attempt ones but also other who have given the exams many times.
As per the eligibility criteria candidates needs to be a graduate from any field from a recognized university with no minimum aggregate required, you can apply even in the final year. As UPSC is more humanities oriented so you may choose to do graduation in any of the subjects like Political Science, Public Administration, History, Geography etc. You should choose the subject based on your interest and it'll help you in graduation as well as UPSC as you can also have any of these in the optional list too.