I don't think Rocket Japanese does a good job of stating a "most recommended" way of progressing through the lessons. I finished all the audio courses and moved onto the grammar courses and each of them would have had WAY more relevance if they were PAIRED with their respective audio course. This really frustrated me because I could have been learning culture and grammar along with the audio if I would have known.
Next, the lesson 1.7 quiz had KANJI questions!?!? No where in lessons 1.0-1.6 does it EVER mention anything about Kanji. Are we just supposed to guess? That's what I did... I feel the inclusion of those questions in the quiz is a large oversight and lack of quality control. It doesn't help me learn Kanji putting random questions where they shouldn't be and guessing.
I hope others see this post and are made aware of the issue.