A really important book in an area of day to day life that so many are woefully ignorant in = finances/economics.
As the common lingo says : "You don't know what you don't know." - that applies to so many areas, and is in no way a negative or indictment of someone's past upbringing, education/schooling, or otherwise. What it should be used to do is encourage lifelong learning and being a student at all times.
This book is clearly aimed at the younger 'set', however, as an adult, I learned new ways of thinking and mindset which I'd not known before.