Ranking the essential textbooks for engineering and science courses, this collection evaluates the most commonly used academic resources across multiple disciplines. From foundational subjects like Calculus 3, Organic Chemistry, and Inorganic Chemistry to specialized engineering texts including Munson and Cengel's Fluid Mechanics, Heat and Mass Transfer, and Chemical Processes. The list also covers critical courses like Statistics, Economics, Linear Algebra, Environmental Science, and programming with APS106. Whether you're navigating CHE112, tackling mathematical modelling, or diving into fluid dynamics, these textbooks represent the core materials that shape undergraduate STEM education. The rankings reflect factors like clarity, problem sets, real-world applications, and overall student learning experience.