Hello,

First of all in order to appear for UPSC candidates need to pass graduation in any discipline from a recognized University, there is no specific aggregate required in this case, candidates need to attain 21 years, upper age limit for General candidates is 32 years, relaxation is offered for reserved categories, as you come from humanities background so that's going to help a lot you're already acquainted with the subjects of humanities, hence it's an advantage for you, pursuing your master degree can be a choice if you have other aspira5such as after pg you can appear for UGC NET and become assistant professor,teach in college or further pursue your studies, if you're solely interested in pursuing UPSC, this is the right time to initiate your preparation as you are already a graduate, many candidates start the preparation from their graduation days only, but then it's never too late to pursue your aspirations or dream, UPSC examines conducted in three stages namely Preliminary which is mcqs based of two papers, each consisting of 200 marks,in first paper you need to score cutoffs against your respective category, second paper is qualifying by nature, and you need to score only 66 marks out of 200, Mains has four GS papers ,Two Optionals, One Essay, Two Language Paper, so there are total of nine papers and each is of 250 marks, total is 1750 marks, followed by interview or personality test of 275 marks,few of the important things that I can share with your regarding UPSC preparation is download the syllabus from the official website,and go through it, this is very vital part of preparation to know what to read and what to skip, another important thing is newspaper reading on a regular basis, you can choose The Hindu or The Indian Express, when it comes to study materials,start with NCERTs as this will make your foundation strong, and then move towards other standard books, go through previous year paper, practice answer writing in advance, there are sites which has previous year toppers answer sheets, you can go through them, practice mock paper and test series to analyze your progress etc.

Hii!
In order to apply for and sit for UPSC exam, you need to satisfy the eligibility criteria, which states that the candidate must have completed graduation , i.e., Bachelor's degree, in any subject combination from a recognised university.
Thus, you don't require MA degree for UPSC exam ,and can take coaching and sit for UPSC exam.
Hope this helps.
Good luck!