Global Economy 101 is more than a course title; it’s a practical lens to view how markets interact, how policies shape activity, and how global events ripple through households and businesses across regions and income levels, influencing decisions from hiring to savings and investment, revealing how investors calibrate risk, how households plan for price changes, and how firms adjust production lines in response to policy signals.In this primer we unpack the core drivers of the world economy, grounding the discussion in widely watched measures, data dashboards, and global economic indicators that reveal how production, trade, and consumption shift over business cycles, and it also emphasizes the role of central banks, fiscal agencies, and statistical agencies in shaping publicly available insights.