Candidates can effectively summarize large volumes of information for UPSC by employing techniques like mind mapping, which visually organizes ideas, and the Pomodoro technique, enhancing focus during study sessions. Creating concept notes is beneficial, highlighting key themes and important facts systematically. Paraphrasing content in one's own words reinforces understanding and retention. Regular revisions and summarizing after reading material can also help crystallize knowledge. Utilizing flashcards for quick recalls of facts and concepts enables quicker information retrieval, making it easier to manage extensive syllabi effectively.