I have to ask, have you tried book three or four. I completed the two first books when I started learning Japanese and loved them, but the Kanji implementation of book three and four have made them collect dust on my shelf without me trying them seriously out. I get confused when a Kanji compound vocab use on’yomi and not kunyomi since one of the Kanji can be written in hiragana.
Should I give them a new chance? (My grammar is still seriously lacking.)