Instruct: Classify a given review as either positive or negative.
Query: Readable High-Level Introduction for Programmers

True to its name, this textbook focuses on the concepts and is at times very abstract, though it frequently discusses how different real OSs (Windows, Mac OSX, Solaris) tackle different OS design problems.I thought the material was at the perfect level of detail for me, an application programmer. One of the most readable textbooks I've had in my four years as a computer science undergrad. Easy to understand and end-of-chapter summaries were a welcome addition.