This document provides guidance on which constitutional law books to refer to for study. It recommends VN Shukla as the best book, describing it as very well organized, containing the constitutional text, and reliable for laying down the law. It finds MP Jain elaborate but sometimes difficult to find the exact point. For emergency situations, it strongly recommends VN Shukla. The document also provides tips for studying constitutional law, such as remembering article numbers and case law principles rather than citations.