This document summarizes a book about bringing 3D immersive technologies to enterprise learning and collaboration. It begins by thanking contributors to the book. The book is structured in four parts that explore possibilities of 3D technologies, build a blueprint for 3D learning experiences, break new ground by overcoming traditional training methods, and envision the future just beyond the horizon. Several case studies are presented that demonstrate how organizations have leveraged 3D virtual environments to provide training and learning opportunities at a lower cost and greater scale compared to traditional in-person methods. The document concludes with design principles and "rules from revolutionaries" for successful adoption of 3D learning and collaboration technologies in enterprises.