Hooked by Nir Eyal is a fascinating book that explores the psychology behind building habit-forming products and how it can be applied to e-commerce. Eyal introduces the Hook Model, a four-step process that helps businesses create products that users can't put down. This book provides valuable insights into consumer behavior, engagement, and retention, and offers practical advice on how to design products and experiences that keep customers coming back. If you want to create a highly engaging e-commerce business, this book is a must-read.