If you have graduated from the beginner level of Japanese, you have likely encountered the famous "red and blue" Minna no Nihongo textbooks. As you transition into intermediate studies (JLPT N3 level), the next hurdle is the Minna no Nihongo Chukyu 1 series.
Create a spreadsheet or Anki flashcards for every question you got wrong. For a grammar question like "〜に限って (ni kagitte – especially/limited to)," write three original sentences. minna no nihongo chuukyuu 1 hyoujun mondaishuu pdf
Mastering Intermediate Japanese with "Minna no Nihongo Chūkyū 1 Hyōjun Mondaishū" PDF If you have graduated from the beginner level