Preparation A refresher on General Chemistry basics before you dive into Organic 1. Organic 1 Structure, bonding, and the foundational reactions of first-semester Organic. Organic 2 Aromaticity, carbonyls, and more advanced mechanistic reasoning. Mechanisms Key patterns and clues to help you predict how a reaction runs. Reaction Videos Short walkthroughs of reactions and mechanisms, worked step by step. Spectroscopy NMR and combined spectroscopy practice to identify unknown structures.