I haven't finished it yet.
In some parts, like chords for example, it doesn't seem as clear and easy to understand.
It also has a different approach to scales, position-wise, which doesn't help me understand them as much maybe...
But everything is subjective!
The positive thing is the exercises I have encountered so far, which have been very informative

I believe that it is not intended for someone who does not have at least some basic knowledge of music. But even so, many things need explanation that is not provided in the book. It contains enough theory that really makes it a teacher's book and not a student's.