At this point of the semester, most organic students are about a month in and starting to learn how to draw mechanisms and actually write organic reactions. This is the point where the class average on the following exam drops precipitously. It happens everywhere. People who are shaky on the preliminary material will quickly try coping by memorization and invariably fall behind. Acid/Bases, Nomenclature, Isomerism, Alkanes, Spectroscopy are the basic principles which you must understand thoroughly to advance at any feasible pace...because you will now begin to apply all that knowledge in depth at a blinding pace for a seemingly innumerable amount of reactions. If you're considering hiring a tutor, now is the time.