A Book By AI: Leveraging Free AI Tools for Smarter Writing is a practical and inspiring guide that explores how writers can ethically and effectively use free AI tools to enhance their writing process. Authored through real-world experimentation, this book covers academic, creative, and professional writing-from planning and drafting to editing, refining, and publishing. It demonstrates how AI can assist without replacing the human voice, helping writers think more clearly, write more confidently, and work more efficiently. With structured chapters, thoughtful reflections, and hands-on examples, this book empowers students, researchers, educators, and content creators to embrace AI as a responsible writing partner. It is both a handbook and a statement on the future of authorship in the digital age.