Effective strategies for assimilating the vast UPSC syllabus involve setting realistic goals, prioritizing topics based on relevance and difficulty, and devising a structured timetable. Additionally, utilizing revision techniques such as summarization, flashcards, and group discussions can enhance retention. Regularly testing oneself with mock exams helps gauge understanding and reinforces learning. Breaking down content into manageable sections and employing spaced repetition aids in long-term retention of information. Consistent self-evaluation and adjustments to study techniques ensure that learners stay on track and maximize their learning efficiency.