"The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses" by Eric Ries is a book about how to create new products and companies in a way that is efficient, effective and less risky. The author shares his method called "The Lean Startup" which is a way of testing and developing new ideas by starting small and learning from customers along the way.

Chapter 1: The Lean Startup: The Movement That is Transforming How New Products Are Built This chapter introduces the lean startup method and explains why it's a more efficient and effective way to build new products and companies.

Chapter 2: The Engine of Growth This chapter talks about how a company can achieve sustainable growth by focusing on a metric that the author calls the "engine of growth." The author explains how to identify and measure the engine of growth, and how to use it to make data-driven decisions.

Chapter 3: Vision This chapter talks about how to create a vision for the company and how to use it to guide the development of the product. The author explains how to create a vision that is inspiring, actionable and customer-focused.

Chapter 4: Steer This chapter talks about how to use validated learning to make data-driven decisions. The author explains how to use customer feedback and metrics to make decisions about what to build, how to build it and when to pivot.

Chapter 5: Accelerate This chapter talks about how to speed up the process of building and launching a new product. The author explains how to use techniques like continuous deployment and split testing to get a product to market faster.

Chapter 6: Invent This chapter talks about how to create a culture of continuous innovation within the company. The author explains how to use techniques like experimentation and customer development to create new products and features.

Chapter 7: Scale This chapter talks about how to scale a company once it has achieved product-market fit. The author explains how to use techniques like organizational design and management to scale the company.

In summary, "The Lean Startup" is a book that explains how to create new products and companies in a way that is efficient, effective and less risky. It provides a comprehensive guide to the Lean Startup method, including chapters on creating a vision, using validated learning, accelerating product development, fostering a culture of innovation, and scaling a company. It's a valuable resource for entrepreneurs and business leaders looking to build successful products and companies.