Common strategies for effective UPSC preparation include creating a structured study plan that allocates time for each subject, focusing on both the preliminary and mains examinations. Systematic revision of the syllabus is vital, along with daily newspaper reading to stay updated on current affairs. Candidates should prioritize understanding concepts over rote memorization. Regular mock tests can help gauge preparation levels, while engaging with study groups allows for collaborative learning. Utilizing standard reference books and keeping up with previous years' question papers will also enhance overall preparation strategies, ensuring candidates cover the relevant content effectively.