The best book to become a hacker largely depends on your current knowledge level and specific areas of interest. However, a highly recommended starting point is "The Hacker Playbook 2" by Peter Kim. This book provides a comprehensive guide to penetration testing and hacking, covering a range of topics from setting up your testing environment to advanced exploitation techniques. It's written in an accessible manner, making it suitable for beginners and more advanced readers alike. Ethical hacking is a vast field, and no single book can cover all aspects. It's advisable to read multiple books and resources to gain a broad and deep understanding of the subject.