Preparing for graduate studies in engineering after completing a BS in Physics involves focusing on key mathematical concepts and engineering principles. Recommended areas of study include linear algebra, control theory, dynamics, and calculus of variations, with an emphasis on practical applications rather than theoretical derivations. While some participants suggest reading non-traditional books for broader perspectives, such as "Don Quixote" and "What is Mathematics?" by Courant and Robbins, others emphasize the importance of solid mathematical foundations through formal texts. Specific recommendations for math resources include Stewart's "Calculus: Concepts and Context," Lay's linear algebra, and Blanchard's differential equations. Additionally, there is a consensus on the need for a strong understanding of signals and systems, including Fourier transforms and complex analysis, as engineering textbooks often inadequately cover these topics. Overall, a mix of rigorous mathematical study and broader reading is suggested to prepare effectively for graduate engineering coursework.