Congratulations on your book Rob!
I was interested to read that there is lute and guitar tablature in it, but no standard notation. That takes me back! Because, rather curiously, (and I've never come across anyone else who started like this), I actually started playing guitar from lute tablature. My very first classical pieces, (after learning a few chords, just to get me started), were simple Sor studies, given to me in lute tab.
Wisely, though, my teacher also taught me to read standard notation too, but for a while, my proficiency at tablature was ahead of my ability to read standard notation. So, more difficult pieces, I read from tab and the easier pieces, (perhaps a couple of grades behind), from the dots.
After a while, I transcribed pieces into tablature myself, so I always maintained the link between the notation and the positioning of my fingers on the frets. Someone once asked me, how it was that I became so good, (his words), at reading dots when I started with tablature, so I told him about the transcribing I did. I actually have Prelude No. 1, by Villa-Lobos, in hand-written lute tablature somewhere!
However, I have to admit, I've not read any lute tablature for many years, (since my second guitar teacher, and subsequent ones, only taught standard notation), so I can barely read it now!
"There is no duty we so much underrate as the duty of being happy.
By being happy we sow anonymous benefits upon the world."
Robert Louis Stevenson