Germanic sociolinguistics explores the diversity of the German language. It is one of the most active branches of linguistics, involving many sub-disciplines. Heinrich Löffler's introduction to Germanic sociolinguistics has established itself as a standard work. As with every previous edition, this new revision brings the reader up to date with the current state of research and familiarizes them with both old and new methods and findings. It also highlights developments and trends that are currently emerging in contemporary language. The book is suitable for beginners as an easily readable first introduction, as well as for advanced students and exam candidates, and beyond. It introduces the varieties of contemporary German and, if desired, how to engage with them.