Look for PDFs that are not just pictures of pages, but searchable, high-resolution files.
Minna no Nihongo Chuukyuu 2 PDF: Your Complete Guide to Better & Updated Downloads minna no nihongo chuukyuu 2 pdf better download upd
For reliable study, buy or borrow officially. If you still want a free PDF, be prepared for lower quality and potential copyright issues. The “better download” today is through a legitimate e-book store. Look for PDFs that are not just pictures
Buy a used physical copy (eBay, Amazon JP) for $15, then use the official (iOS/Android) to access audio and answer keys. You scan the barcode in the book to unlock digital content. Amazon JP) for $15