Like most of the for dummies series, its a good suplement, but if this is all you have to work from, then you are completly doomed. i caught at least one error (where the author indicated the reaction was going to involve KI but instead involved NaI) and I'm sure that if I caught one there were likely others. A lot of the material really was a waste of my time, which was understandable, as the author couldn't possibly know what areas of o-chem II my profesor would want us to concentrate on. Not really enough humor either. That all said, it was a good suplement in that it did help connect some of the dots to help a student better understand the wicked evil that is o-chem II.