Artificial Intelligence (AI) is becoming increasingly present in our lives, transforming the way we work, learn, and interact with the world. However, many people remain unaware of the full potential of this technology and its effective use. This book was created precisely to address this gap as it offers an accessible and practical guide to the main areas of application of Artificial Intelligence across different sectors of human activity. Purpose of the Book The primary objective of this book is twofold: first, to introduce AI, particularly Generative AI, alongside the art of prompt creation, enabling readers to maximize the benefits of these tools; and second, to map and present the most widely used AI applications, highlighting their key features and practical applications. Beyond that, we also seek to raise awareness of AI's potential across different sectors and to encourage reflection on its impact, particularly in terms of ethics and responsible use. By bringing this information together in a single volume, we aim to support a deeper understanding of AI and empower professionals, educators, and students to explore these technologies in a more informed and productive manner.