Regarding the reviewer that said "this book is not for beginners " I say of course it's not that's why it's called Book Two"
I taught for many years and Classical Guitar Technigue Vol. 2 is an excellent study after one has mastered Classical Guitar Technigue Vol. 1.
Maybe if this reviewer would take his/her time to start guitar at the beginning like one is suppose to he/she would learn to read music and learn the basics
which would make it so he/she could advance to grade2 and beyond.