This book broke down a hard and mysterious topic (operating systems) for a new CS student like me into everyday analogies, which almost eradicated my fear of the subject matter. It had the appropriate amount of technical details to be usefully informative for a college class while also inspiring a more in-depth read of other material that are much more boring. The book is the reason why I love operating system so much, and I continued to take more CS classes as a math major.