This document provides an introduction to the Q & As for the PMBOK® Guide Fifth Edition book. It discusses the contributors to the book and previous editions. The introduction notes that the book facilitates developing a deeper understanding of generally accepted project management knowledge and practice through multiple choice questions and answers covering key PMBOK® Guide concepts. It aims to address the project management processes and knowledge areas from A Guide to the Project Management Body of Knowledge. The introduction thanks all the contributors who helped create the book and its predecessors.