For me, Organic was all about taking the time to do lots of practice problems. I made A's both semesters because I put in lots of time before every test memorizing mechanisms, working out reactions, etc. In many ways its the ideal class for a pre-dent because it requires lots of memorization and also incorporates the perceptual aspect that is so important for dentists. Also, good decision to take it during the summer when you can really focus all your time on it. Many people say that the ball and stick model kits helped them to visual the molecules and I definitely suggest you get one, but I didn't end up using mine all that much simply because I didn't feel I really needed it. Bottomline is, if you're willing to put in the time and effort, you're going to do well in organic. Good luck.