I'm new here so if this has been brought up before, please excuse me but I'd like to suggest setting up the layouts for Lesson Note pdfs so they don't use so much paper. also Rather than an entire title page, how about just a header? The Grammar Points could be done a little smaller point size than the rest of the notes. The 3 Beginners lessons take up 12 sheets of paper, that's pretty wasteful.
Not complaining, just offering some constructive criticism!
The lessons are great, I'm pretty intimidated by the language but you're making it fun!