A: Almost. Sou Matome is great for review . You should pair it with Try! N4 (for deeper grammar drills) and the Shin Kanzen Master N4 (for harder reading). Sou Matome alone might leave you weak on listening.
If you have typed this into a search engine, you are likely looking for a digital version of this famous textbook. But what does the “319l” code mean? Is it safe? Is it legal? And most importantly, is it the right tool for your N4 journey?
A: Sometimes users rip sentences from the book and import them into Anki decks. That is fair use. The “319l” tag there just means the deck follows the Sou Matome order.