To develop effective opinions on current national issues for the UPSC, candidates should engage with multiple sources of information, including newspapers, journals, and credible online platforms. Regularly reading editorials and expert analyses can enhance understanding of different viewpoints. Participating in discussions or study groups can foster critical thinking. It's also useful to relate current events to historical contexts and government policies to form a comprehensive view. Writing essays or summaries on national issues can further consolidate this knowledge and improve articulation in exams.