Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a wonderful book.

This book is wonderful when it comes to telling about different shareware I could load onto my Mac, lots of different tweaks, great humor.Best of all this book helped me regain sanity, by telling me I could reboot, then click and hold my mouse button down to force-eject a CD when no operating system is installed.It's still not David Pogue's OS X: The Missing Manual, but I will give Bob LeVitus credit for helping me out on that one!