Besides the DevOps Foundation Courseware - English (ISBN: 9789401803595) publication you are advised to obtain the publication DevOps - A Business Perspective (ISBN: 978 940 180 372 4).

DevOps enables organizations to decrease time to market for new releases, software, or services by encouraging a collaborative approach from development and operations teams. The adoption of DevOps creates an environment where productivity is increased through the automation of processes around infrastructure and workflows.
DevOps as a phenomenon associated with new automation tools, programming techniques or technologies; It differs from other books by the structural nature of the narrative (perhaps, excessively structured) approach and by the attempt to cover fully the phenomenon of DevOps at a basic, fundamental level.