The Martian (Andy Weir): I probably read it 10 times as a kid. Project Hail Mary (Andy Weir): Read it in one sitting (~8 hrs). Convex Optimization (Stephen Boyd and Lieven Vandenberghe): Boyd is my hero. I will do anything for Boyd. Algebra, Topology, Differential Calculus, and Optimization Theory for CS & ML (Jean Gallier and Jocelyn Quaintance): Wrinkled my brain. I still dont understand a lot lol.