To improve analytical skills for UPSC, candidates can use resources such as books on logic, critical thinking, and analytical reasoning. Engaging with analytical essay prompts and past UPSC papers aids practice. Online platforms offering mock tests and quizzes are beneficial for self-assessment. Additionally, joining study groups encourages discussion and debate, fostering deeper understanding. Taking courses or workshops focused on data interpretation and case analysis can further enhance analytical thinking skills necessary for tackling UPSC questions.