This book aims to provide an in-depth exploration of Aikido, covering its history, fundamentals, techniques, philosophy and spirituality. It is aimed at both experienced practitioners and novices curious to discover this fascinating martial art. It aims to : Provide a comprehensive understanding of the history and development of Aikido; Explain in detail the technical and philosophical principles underlying this martial art; Offer practical advice for improving practice and deepening understanding of Aikido; Explore the spiritual dimension of Aikido and its application in everyday life; Examine the current state of Aikido worldwide and its future prospects. Through these pages, we will explore the essence of Aikido, not only as a system of self-defense, but also as a philosophy of life promoting harmony, respect and personal development. Whether you're a seasoned practitioner seeking to deepen your understanding, or a novice curious to discover this unique martial art, this book will guide you in your exploration of Aikido.