This teachable casebook provides an introduction to the law and policy of modern communications. The book is organized by analytic concepts instead of current industry lines, which are constantly made out-of-date by technological convergence. The basic ideas--power, entry, pricing, access, classification, (indecent) content, privacy, and intermediary liability--equip students with a durable and yet flexible intellectual structure that can help parse a complex and ever-changing field. This book includes concise technological and legal summaries and carefully edited opinions and FCC reports. It also includes "just-in-time" delivery of the text of statutes and regulations so that students get accustomed to parsing statutory material as they analyze legal questions. In this seventh edition, we have simplified wherever possible and minimized technological detail and regulatory history that were slowing down readers without sufficient pedagogical payoff. We hope to have created a comprehensive, challenging, yet accessible text that will pay long-lasting educational dividends. More information is available at the casebook's website: http: //jerrykang.net/commlaw. Comments are always welcome.