Effective revision of the UPSC syllabus can be achieved through a structured approach. Candidates should create a revision timetable that allocates specific time blocks for each subject, ensuring comprehensive coverage. Summarizing topics using notes and flashcards allows for quick reviews and helps in retaining key information. Regular self-assessment through mock tests and previous years' papers will identify areas needing improvement. Additionally, revising with peers can provide different insights and facilitate a better understanding of challenging concepts. Finally, focusing on current affairs ensures candidates stay updated about crucial topics relevant for the exam.