Alastair, thanks for the link. I appreciate it!
Anybody else? There must be dozens of guitars players here.

Anybody copy riffs from the real tracks? Learn new chord shapes or progressions? Anybody learning to read music with BIAB? Write Music? Anybody else use the Nashville number system?
How are you measuring progress?
Any particular feature you find most helpful for YOU?
How are you using this in general?
I would really like to hear.
Thank you!