Past UPSC candidates recommend a strategic approach to the intake of study materials. It is essential to focus on quality over quantity, selecting resources that provide comprehensive coverage of the syllabus. They suggest adhering to NCERT textbooks as foundational materials, followed by selectively using advanced books and online resources. Additionally, joining coaching classes can be beneficial, but only if they complement self-study. Candidates also emphasize the importance of utilizing previous years’ question papers to understand exam patterns, while staying updated with current affairs through reliable news sources to ensure relevance in the study process.