When selecting books for UPSC preparation, candidates should consider several precautions. First, they should choose authoritative sources that are recommended by previous toppers and faculty. Additionally, candidates must avoid overwhelming themselves with excessive reading materials; focusing on a few well-structured books and current affairs materials is essential. It’s important to ensure that the selected books cover the entire UPSC syllabus in detail, including the latest updates. Moreover, checking for genuine reviews and recommendations from reliable sources can help ensure that the material is relevant. Maintaining a balance between core subjects and current affairs is also crucial for effective preparation.