I trained as an engineer, and have worked as a designer in IT for 9 years. I'm a user experience architect, if you've heard of UX.
Never having been to design school, much of this book's design school practices and trivia was news to me.
However, all the lessons about presentation (prepare), plagiarism (don't do it), portfolios (show process), hiring staff (work with people you like) and more are in fact invaluable.
Buy this book.
And put it somewhere within reach. You'll want to look something up within days.