Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good reference material but not much practical instruction

The Rhapsody Developers Guide is more a conglomeration of a large set of OpenStep documentation than it is a practical guide to Rhapsody development.The first section of the book is an interesting introduction to operating system design. This section is interesting reading for anyone who hasn't had a good introductory course on Operating Systems at the undergraduate level.The second part of the book regurgitates much of the reference information found in the OpenStep AppKit and Foundation Kit framework guides. The advantage to the Rhapsody Developers guide is that it puts this information in one volume with a comprehensive index.Unfortunately, however, the book contains little practical information on how to use the "Yellow Box" frameworks that are the heart of Rhapsody.