Aspirants can use case studies effectively in their Mains exam preparation by applying real-world examples to theoretical concepts. Identifying and examining relevant case studies allows candidates to illustrate their arguments and showcase practical understanding. This method enriches answers, particularly in subjects related to governance, public administration, or socio-economic issues. When preparing, aspirants should analyze various case studies comprehensively, focusing on outcomes, methodologies, and lessons learned. Incorporating these insights into essay writing or answers can demonstrate a well-rounded grasp of the syllabus and an ability to connect theory with practice, enhancing overall performance.