If you're like me, in order to get a good grade in a class you have to at least be able to reason with the information instead of rote memorization. This book has saved my life in organic chemistry. David Klein is amazing at mentioning simply in every section prior "information" the teacher should have told you what is but probably didn't. For example, I had no idea what a "carbonyl" group was and what exactly was happening in certain mechanisms. I'm fairly certain my professor might have mentioned in passing what a carbonyl group was, but I was too busy trying to follow to register.
Klein offers advice and gentle reminders in small sentences that don't make you feel like an idiot. He is very adamant that this is not a textbook but a book IN ADDITION TO the textbook. In fact, I read what he has to say before I even crack the textbook so I am already familiar with nomenclature and can focus on the studying aspect instead of stopping every few sentences and having to look up a term. This saves much headache and frustration in a subject that already has plenty of that built in. Plus it has loads of practice problems (with solutions in the back!) to try before tackling your textbook.
This book (and its twin for the first semester) are so much better than any Dummies book or Demystified book I've read for organic chemistry. SO much better. If you are going to buy a book for this course, get this one and First Semester Topics before you try anything else. It is so very worth it.
You might also want to buy a separate pack of highlighters just for these books too, just because there's so many great tips.