So I’ve had some time to look at the book 
I updated a bit the schedule, switched the order of talking and listening to reflect the way it is presented in the book:
When we start, there will be a thread for each chapter. I’m not sure yet if there should be one thread for each skill too, depends a bit on the participation, so we can see when we get there.
I found a Reddit thread with a lot of links for Quartet: PSA: Official Quartet Website has launched on 25th March. Resources, Errata aka Misprints, and Tips explained. It has the grammar / expression powerpoint slides, writing worksheets, conversation self-check, audio files, errata, and even a whole Anki deck!
I have checked the Audio files linked in the reddit link, and it is the same as those that you can get via the OTO Navi app, so you can just decide if you go the PC route or the Mobile route what’s more convenient for you. (both resources are also mentioned in the book, page 17)
OTO Navi app links and instructions
- Install the OTO Navi - Sound Navigator app.
Google play link
Apple store link - Find Quartet in the app and download it
- Now you have access to the audio content
I haven’t planned time in the schedule to read the first pages of the book but I guess there are relevant too, so I’ll make an unofficial kick-off the week before we start (so August 12th) to invite everybody to read them
Also it took me a while to find the Supplement Book and I even thought for a moment that it hadn’t been shipped by mistake, but it’s simply well attached to the end of the main book 
There is also an official app for Quartet Vocab and Kanji. I’m not personally going to use it, since I use WK for kanji, but just in case here are the links:
Google play link
Apple store link
I’m really excited to start, there is really a lot of content in the book, looks like we’ll have to work hard to complete each section in only one week!
)
