This book combines a literature study and the results of a longitudinal case study from the oil and gas sector - the Ivar Aasen project - to explore the notion of learning in project-based organizations. First, readers are provided with a thorough examination of previous research on project learning, which is presented in structured and comprehensible format. The author explores the circular relationship between learningand performance in projects and identifies the means and attitudes required to support this circular relationship both within projects and between projects. The second part of the book has a narrower focus, namely on improving the institutionalized level of learning in project-based organizations. The empirical findings are drawn from the longitudinal case study and provide some useful insights into learning in a complex and demanding environment characterized by continuous changes, extreme time pressure, a multiplicity of stakeholders, tremendous financial impact, and market uncertainty. The study is peer-reviewed and presented as an academic text. Bassam Hussein is Associate Professor at the Department of Mechanical and Industrial Engineering, in the Norwegian University of Science and Technology (NTNU) in Trondheim, Norway. He is the author or co-author of more than 75 publications in project management. Hussein's publications focus on bridging and integrating conceptual and practical knowledge in the field of project management. He has extensive experience as lecturer and instructor, and during his career he has participated in the development and implementation of a wide range of education programmes in project management. In 2009, Bassam Hussein was awarded the students' pedagogical prize, and in 2013 he was awarded the best lecturer prize from the Continuing Education Program in Project Management at NTNU. In 2016, he was listed as among the top ten exceptional lecturers in Norway by the newspaper Morgenbladet. Bla i boka her!