This book explains the basic concepts of Article 9 of the Uniform Commercial Code. Cases are selected and edited to lay out the five stages of a secured the creation of security interest, attachment, perfection, priority, and foreclosure upon default. Each chapter begins with prenotes to contextualize cases, comments, and problems. The book contains short videos on key concepts. Unfortunately, the secured transactions videos are accessible only on Kindle Fire devices (3rd generation and up). The secured transactions videos, however, are available on YouTube (youtube.com/user/WUSecuredTransaction)