If you ultimately decide to use a digital version (official or otherwise), optimize your workflow:
In PDF form, this book loses none of its rigor. You get a digital replica of the 200+ page workbook that systematically deconstructs every N3 grammar point. Shin Kanzen Master N3 Grammar Pdf
Even if you find a legitimate digital version or a user-created scan, relying solely on a PDF has distinct disadvantages for N3 study: If you ultimately decide to use a digital