This book illustrates the transformation and the challenges German book publishers are facing due to the digitalisation and it analyses how social media can be used to overcome these. The influence of digitalisation on book publishers and the medium book, as well as the transformation within the publishers, the new possibilities for publishing books and the challenges for book publishers are described. Social Media platforms, possibilities, goals and marketing potential are explained. The book includes an analysis of social media activities of German book publishers and gives further recommendations for them. It also gives a prognosis for the prospective use of social media by book publishers and for revenue models for book publishers in the digital age, as well as a forecast on the future of book publishers in Germany in a whole. The book includes findings from several unpublished interviews with experts from different German book publishers.