Effective study techniques for UPSC aspirants include the use of active learning methods such as summarizing reading materials and teaching others. Creating mind maps helps in visualizing complex topics, while utilizing flashcards for key terms aids in retention. Regular revision, spaced repetition, and taking mock tests help assess knowledge retention and readiness for the exam. Aspirants should also prioritize current affairs through daily news analysis and monthly magazines. Engaging in previous years' question papers provides insight into the exam format and question styles, assisting candidates in honing their answering strategies.