Effective revision strategies for the UPSC syllabus include creating a structured revision timetable, integrating regular self-assessment through mock tests, and utilizing active recall techniques. Candidates should engage in spaced repetition to reinforce retention over time, while summarizing key topics into concise notes aids efficient review. Group studies can also enhance understanding through discussion and collaboration. Regularly revisiting difficult concepts ensures they remain fresh, while focusing on high-yield areas prioritizes relevant knowledge. Furthermore, incorporating current affairs into revisions ensures candidates are well-rounded and prepared for the dynamic nature of the exam.