For mathematical preparation, start with Mathematics for Economists, which bridges undergraduate mathematics to optimisation and linear algebra used in graduate economics. For microeconomics, Microeconomic Theory is the graduate reference for formal models and proof-based reasoning.
For macroeconomics, Advanced Macroeconomics covers growth, business cycles, policy and open-economy macro. For econometrics, Econometrics develops asymptotic theory and core estimation methods, while Mostly Harmless Econometrics explains causal empirical strategies.
For video and lecture material, use LSE Department of Economics and LSE for programme-adjacent talks and LSE public material. Marginal Revolution University, MIT OpenCourseWare and Ben Lambert are useful for university-level lecture content, applied econometrics and detailed statistical revision.
For podcasts, LSE Public Lectures and Events gives long-form lectures across economics and policy, while Planet Money and The Indicator from Planet Money connect economic concepts to institutions, markets and data. More or Less: Behind the Stats is useful for evaluating statistical claims, and VoxDevTalks gives research-led development-economics interviews.
For structured revision, use MIT OCW 14.32 Econometrics to refresh regression, identification and inference, and Mastering Econometrics for applied causal questions. MIT OCW 14.01SC Principles of Microeconomics can be used selectively to patch specific microeconomics gaps, but the main preparation standard should remain graduate-facing. LSE Events helps you find policy examples and public lectures to connect theory with live economic questions.