It's certainly enough to get you started for the first few months without having to spend hours trawling through esoteric tomes of technical know-how.
As a complete beginner to mixing, it went into enough detail for me to understand the basics (and more) of the subtle use of EQ, panning, sound placement, effects etc so that I could get on with using the knowledge I got from it to do what I wanted to do which was making music, instead of being overly worried by the mixing process.
It's a book I intend to re-visit and re-read.