Were the following topics taught during your studies?
Classification of organic reactions and their mechanisms (polar, radical, pericyclic reactions, oxidations/reductions), fundamentals of thermodynamics and kinetics, implications of reaction mechanisms for the stereochemical outcome of reactions, solvent and substituent effects, Brönsted and Lewis acids and bases, typical examples of nucleophilic substitution reactions (SN1 and SN2; SN2t on carboxylic acid derivatives), addition reactions (nucleophilic addition to the C=O double bond, electrophilic addition to C=C double bonds), redox reactions