Use the methodology in this study guide to design, manage, and operate a balanced enterprise cybersecurity program that is pragmatic and realistic in the face of resource constraints and other real-world limitations. This guide is an instructional companion to the book "Enterprise Cybersecurity: How to Build a Successful Cyberdefense Program Against Advanced Threats." The study guide will help you understand the book's ideas and put them to work. The guide can be used for self-study or in the classroom. Enterprise cybersecurity is about implementing a cyberdefense program that will succeed in defending against real-world attacks. While we often know what should be done, the resources to do it often are not sufficient. The reality is that the cybersecurity conundrum—what the defenders request, what the frameworks specify, and what the budget allows versus what the attackers exploit—gets in the way.