This document provides a comprehensive guide to cracking the civil services examination written by those who have achieved success in the exam. It covers all aspects of the exam preparation process including choosing optional subjects, exam structure, strategies for the preliminary exam, main exam, essay paper and personality test. The guide emphasizes focusing preparation on gaining a strong conceptual understanding of topics rather than aiming for expertise. It also stresses the importance of choosing optional subjects based on interest, availability of guidance and exam trends to maximize chances of success.