Assuming you have acquired a legitimate digital copy, here is the optimal way to use this book to raise your listening score from 30/60 to 50/60.
For best results, use the Choukai book alongside other volumes in the Shin Kanzen Master series: Shin Kanzen Master N3 Choukai Pdf
Whether you pursue the legitimate copy or rely on digital PDFs, the key to success is with the material. Listen actively, review transcripts thoroughly, and practice daily. Your ears will thank you on exam day. Assuming you have acquired a legitimate digital copy,