There's a brief section on it in the Diana Poulton lute book.
Quoting Rob MacKillop <robmackil...@gmail.com>:
Because my life is not complicated enough...is there a tutor in English for learning German tablature, either published or online? Rob Mackillop -- To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html