A look inside a Lean Startup-style accelerator In the summer of 2014, five new startups went through a Lean Startup-focused Accelerator. The ten-week program helped them develop their initial ideas into practical businesses with a few actual paying customers. By testing critical assumptions about their product's value proposition, the teams quickly found the beginnings of product-market fit. That turned into cash commitments from early customers to help the startup develop solutions to their real problems. This book explores the lessons learned from these startups and empowers anyone with a business idea to gain traction and to find paying customers. It includes weekly journal entries written by the startups explaining what their hypotheses were, the exact tests they ran to validate their ideas, and the results of their experiments. 99% of startups fail - use the tools described in this book to join the 1% that succeed.