Of the over 100 types of retinal neurons, amacrine cells account for 60 types representing the bulk of this diversity, with each of the roughly 60 types receiving a different set of inputs synapsing with a different specific set of outputs. While overarching principles of how these interneurons are functioning is known, specifics as to what an individual amacrine cell (AC) type responds to in the visual scene and what cohort of presynaptic mechanisms create this selectivity are largely unknown. Much remains to be uncovered about the precise mechanisms of action for individual types. In this thesis I studied several types of genetically identified ACs that would otherwise be seldom encountered without a pre-labeling approach.