This document discusses applying Lean principles through case studies. It describes attending a Lean workshop and creating a Lean canvas and landing page experiment that obtained 8 signups. It notes that applying Lean can be hard and quotes Einstein about the differences between theory and practice. A prototype is defined as an experiment that answers a question, and framing experiments properly is discussed. Several case studies on team formation and startups like Instagram, Ola, and Flipboard are also mentioned.