I’m in benkyō mōdo for the N2 JLPT. These are my three main methods of study:
Not a bad textbook. It has EN, CH, and KR translation. It covers a good range of vocabulary. It’s designed for 8 weeks of study.
My first Japanese ONLY textbook. It covers the grammatical nuances and lots of sentence structures that are and aren’t used in every day conversation. It’s for mature Japanese learners.
Because kanji is so vital to being able to function in Japanese society, and it’s a lot easier to learn vocabulary if you know kanji.
I’m planning to take a practice exam before the real one in December. I remember doing this was a big help when I took the JLPT N3 in 2006.