This is simple Japanese that is well executed in instruction. I've had the equivalence of 5 years of educational Japanese during high school and this is both accurate and easy to understand (ah, when things were only in romaji). I'd be happy to help with a writing section if you need/want any.
Back to the review...
I think you provided just enough background so it wouldn't take much to pick up pronunciation in Section 1 and the application of such is clear in Section 2, as in it's well explained. You might consider putting hiragana, katakana, and kanji (especially kanji) in their own respective episodes depending on how much you want to cover! And definitely consider adding more sound files ;)
4.5/5 since it isn't quite done, but you keep going! You've got a foundation for something good.