Minna no Nihongo Shokyu I (Lessons 1 to 25) is the primary textbook for beginners of the Japanese language, typically aiming for the JLPT N5 level . To study effectively, you need two main books: the Main Textbook (Honsatsu) , which is written entirely in Japanese, and the Translation & Grammatical Notes , which provides English explanations and vocabulary lists. スリーエーネットワーク Core Components of Lessons 1–25