Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great library addition!

This book is a handy reference to have in any tech's library. It teaches you about not only the history of Windows, but focuses on the later versions of the operating system without totally neglecting the older versions.It's coverage of command-line tips and tricks is excellent; however I found it lacking in that it didn't cover two areas: (1) It did not cover why the System Restore feature sometimes fails and how to prevent that occurrence; and (2) it only mentioned the SFC utility in the appendix of programs that come with Windows, and that is one program that needs to be gone into depth a bit more.Some of the sections on scripting could have been written to be easier to follow for those new to the subject, but overall I still have to give this book an excellent rating!It definitely was worth the money, and I am overall pleased with the purchase!