Popular resources for studying current affairs for UPSC preparation include newspapers like the The Hindu and Indian Express, as well as magazines such as Yojana and Kurukshetra. Online platforms like PIB (Press Information Bureau) and various educational websites provide daily updates and analysis on national and international events. Additionally, mobile apps that summarize current affairs can simplify the study process. Engaging with diverse resources helps candidates stay informed about dynamic developments crucial for the examination and aids in building a well-rounded understanding of contemporary issues.