I understand you're looking for a report on the search term — likely related to the German language textbook Kursbuch (part of the Menschen or Sicher series, or a generic coursebook) at the B1 level.
If cost is the main barrier, focus on used books or library services rather than piracy. A legal copy ensures full content (audio, transcripts, answer keys) and supports continued production of quality learning materials. kursbuch b1 pdf