This book is a useful aid for the Computer Science course in the first grade of high school. It will help you understand the basic concepts of computer science and enhance your knowledge in modern topics related to it.

Specifically, this book includes:
- Basic theory questions
- Answers to all the questions, activities, and discussion topics of the textbook
- Answers to the self-assessment exercises of the textbook
- Reinforcement exercises at the end of each chapter to check your understanding of the key points of the lesson
- Sample review tests
- Additional information

Nikos Dramountanis