There's a little too much emphasis on "this is how you should do things" for my taste, but if you can get past that by pretending that the entire book is a collection of suggestions, it's not that much of a bother as long as you don't make the mistake I did of trying to adapt to any cookie-cutter system. With that in mind, this book does do a fantastic job of pointing out the inadequacies of note-taking as I was taught it in school, and how better to approach the activity.
(Although, the way I was taught to take notes was the vague advice to "always have a pen and paper handy," and that was about it.)
If I'd read this book while I was at school, I might have left with more than two highers (Scottish qualifications). The ADHD I didn't know I had made it hard for me to retain the right information because, through traditional note-taking, there's no intuitive way to make connections, and certainly there was not the same software out there to help in that regard as there is now. A video I watched about Zettelkasten led me to this book, and this book led me into a deeper dive into the rabbit hole that is PKM and Obsidian. That rabbit hole has re-made me. I was on the verge of quitting my writing career and now I'm writing more than ever while I've also got an OU course starting in a matter of days.