The best practices for revising UPSC syllabus content include creating concise summary notes for each topic. Candidates should apply the active recall technique, quizzing themselves on key points. Using mind maps for visual representation can enhance understanding and retention. Regularly revisiting topics ensures information stays fresh, while discussing concepts with peers can offer new insights. Candidates should prioritize current affairs as this is crucial for the exam. Finally, incorporating daily revision of important topics is essential for comprehensive preparation.