ICSO Workbook is a chapter-wise workbook containing a variety of questions for the preparation of the SOF-organized National Cyber Olympiad 2023-24. Each chapter inside the workbook comprises a quick recap before the start of questions. The questions inside the book are graded from basic to achievers? level in the form of the HOTS section along with hints & explanations. A Solved 2022 National Cyber Olympiad exam paper is also included for a better understanding of the SOF ICSO exam pattern.