The transition from Masu-form to Te-form is where most N5 students fail. Use your PDF’s conjugation tables. Create flashcards. Write the 20 most common verbs (e.g., taberu → tabete, iku → itte, hanasu → hanashite) 10 times each day. By the end of the week, you should be able to recite the Te-form song (a mnemonic from the book).

Open your PDF to the particle summary (usually pages 12–15). Print just those pages and tape them above your desk. Particles (Wa, Ga, Ni, De, E, To, Mo, Kara, Made) account for nearly 30% of N5 grammar mistakes. Focus on De (method/place of action) vs. Ni (target/time/existence).

If you don't actually need the book, but just a comprehensive N5 grammar PDF, here are 100% free, legal resources created by teachers:

| Resource | What it is | Link Search Term | | :--- | :--- | :--- | | JLPT Sensei | Complete N5 grammar list with example sentences (print to PDF) | "jlpt sensei n5 grammar pdf" | | Tae Kim's Guide | The classic free grammar guide (entire website = book) | "Tae Kim Japanese grammar PDF" | | Maggie Sensei | Cute, detailed N5 grammar lessons (save as PDF) | "Maggie Sensei N5 grammar list" |

These are not the Nihongo Challenge book, but they cover the exact same 80+ grammar points for the JLPT N5.