When selecting current affairs sources for UPSC preparation, aspirants should consider credibility, relevance, and comprehensiveness of the information. Preferred sources include established newspapers, government reports, and reliable online platforms. It’s essential to focus on national and international issues that have an impact on Indian society. Regular updates and concise summaries can aid retention. Aspirants should avoid sensationalist publications and ensure they cross-reference facts from multiple sources to build a well-rounded perspective that is reliable for the exam.