To consolidate knowledge gained through UPSC preparation, candidates should employ techniques such as active recall, summarizing information, and teaching concepts to peers. Creating concept maps can visually represent interconnected ideas, helping with retention. Regular revision schedules, utilizing spaced repetition techniques, and practicing past papers ensure knowledge remains fresh and applicable. Additionally, maintaining a study diary to document learning progress can clarify understanding and refine focus areas. Engaging in discussions with fellow aspirants can also reinforce learning and provide diverse perspectives on complex topics.