Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Painfull to use

This is one of the worst language programs I have used. The user interface is terrible and there is almost no help available. The help icon is there but is disabled most of the time. The exercises are hard to decode--you can never tell what you need to accomplish. And the help (the few times the icon is enabled) is very generic and almost never applies to what you are doing. Don't let the number of discs fool you--everything could have fit on a single disc.Save your money and keep looking.