Aspirants can build a strong foundation in public administration for UPSC by thoroughly understanding its core concepts and frameworks. Utilizing standard texts like "Administrative Theory" and publications by the Union Public Service Commission can provide insights into key theories. Engaging in current affairs discussions and case studies strengthens practical understanding. Additionally, attending relevant workshops, seminars, or online courses can enhance knowledge further. Regularly testing comprehension through mock exams focused on public administration can solidify this foundation and prepare candidates for examination challenges.