First know the syllabus of the exam well and learn the topics that's given on the syllabus well. Also try and solve previous year papers to get an idea about the difficulty of the question and paper pattern. You can also refer to the mock/model/guess papers of the current year for practice purpose. You can download the papers and know more about the preparation tips in the below links: https://university.careers360.com/articles/du-pg-admission

https://university.careers360.com/articles/du-pg-exam-pattern