The textbook "Trolier-McKinstry: Materials Engineering" offers a comprehensive introduction to materials science, designed for both one-semester and two-semester courses. It covers the fundamentals of crystal structures and their relationship to the properties of materials. By linking bond strength and the spatial arrangement of atoms with mechanical, optical, magnetic, and electrical properties, students gain an intuitive understanding of how different materials are suitable for specific applications. The book addresses both organic and inorganic materials and provides a systematic description of small molecular crystals, polymers, metals, ceramics, and semiconductors. With numerous illustrations and exercises, it promotes a deeper 3D understanding of structure-property relationships and demonstrates how theoretical concepts can be applied in practical applications. Online solutions and teaching materials are also available to support educators.