Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I recommend this book. It's good, but it has some errors.

Overall, this book is very well organized and easy to understand. It provides many good examples for the topics discussed and should prep readers very well for the test.However, it appears that this book was rushed to press as there are many spelling and gramatical errors throughout the book. Also, there are some concepts and terms that aren't properly defined or are just plain wrong. Alas, the only one that comes to mind just now is the statement that Linux is a flavor of Unix. Linux is in fact it's own OS that was developed to be as compatible as possible with the UNIX world. Because the kernel was developed from scratch and not modified from an existing kernel, Linux is, therefore, it's own OS.Overall, the book is worth the money for the newbies that are learning new things and the seasoned veteran that wants a broad review of the basics.