Not Useless, But Very Close
This writer's writing style is way too wordy & vague. The writer reiterating things we learn way too often and keeps going on grand, long yarns about how effective & intricate something will be right before explaining something super basic like how to adjust the master volume on a track, which doesn't really affect much.
The only reason I don't say this book is totally useless is because you can technically learn where the neccessary controls are located & how to open & use them to some extent, even though it takes way too long.
The west has a major education problem in general. Sadly, this type of bad writing is very standard for educational books. Expect to be confused and frustrated often when trying to learning anything new. Bad teachers everywhere nowadays, and this writer is no exception.