I read somewhere (long ago) that Lew Dite has a Youtube video that talks about his song book. If you can search youtube using "Lew Dite" and "songbook", then I suspect you'll be able to find the video. I'd check for you, but Youtube is blocked in China.
The focus here is on all types of handmade instruments and music. There are lots of helpful builders and players here and lots of Groups to teach and learn. We welcome participation so don't be shy.
Have a look around, introduce yourself in My Name Is... and add yourself to the Member Map. There's an active Chat Room where you can ask questions, offer help or just talk about anything with some great folks.