This document provides a detailed guide for preparing for the CSS competitive examination in Pakistan. It covers all aspects of the exam process, from eligibility requirements to exam structure and scoring. The written exam consists of compulsory and optional subjects across multiple papers testing English, Urdu, Islamiat, Pakistan Studies and other disciplines. Candidates who pass the written exam proceed to medical, psychological and interview assessments. The document provides tips and strategies for preparing for each paper and part of the process to help aspiring candidates succeed on their CSS journey.