The book OSD-NAVI B2 prepares for the Austrian language proficiency exam OSD-Zertifikat B2. It consists of 6 units, 3 according to the exam for teenagers, and 3 according to the exam for adults. Each unit is a complete test in the format and difficulty level of the exams, including the parts Leseverstehen, Horverstehen, Schreiben, and Sprechen. The series also comes with the teacher's book (Lehrerhandbuch), containing all the LV and HV solutions, the transcribed texts, as well as the development of all the Schreiben and Sprechen topics. The glossary is available in PDF format from the publisher's website. The MP3 contains all the Horverstehen.