This document discusses different types of coffee beans and roasts. It describes Arabica coffee as the primary commercial coffee variety due to its better flavor compared to Robusta. Arabica coffee originated in Latin America, East Africa, and Asia. While Robusta contains more caffeine and is hardier, it is bitter with less flavor. The document also mentions less common coffee varieties like Liberica and mentions different roast levels from light to dark and their corresponding names. It concludes with an overview of factors that affect brewing quality like beans, grind, water temperature, and equipment.