Learn economics — how incentives and markets shape the world

Microeconomics, macroeconomics, and the reasoning tools that explain human behavior

Economics is the study of how individuals, firms, and societies allocate scarce resources. It divides into microeconomics (the behavior of individual agents and markets) and macroeconomics (the behavior of entire economies, including growth, inflation, and unemployment). The two branches use the same analytical toolkit but operate at very different scales.

What distinguishes economics from other social sciences is its emphasis on models and incentives. Economists build simplified mathematical models of behavior and use them to make precise, testable predictions. This approach has made economics unusually influential — economic reasoning shapes policy, business strategy, and how we interpret news about the world.

Planana guides you through economic thinking in a logical progression: first developing the microeconomic intuition for supply, demand, and market structure, then scaling up to macroeconomic dynamics and policy debates.

What you'll learn

Supply & Demand

How prices emerge from the interaction of buyers and sellers, and how markets move to equilibrium when they're free to do so.

Elasticity

How sensitive quantity demanded or supplied is to price changes — the concept underlying tax policy, pricing strategy, and addiction economics.

Market Structures

Perfect competition, monopoly, oligopoly, and monopolistic competition — how market structure determines pricing power and efficiency.

Game Theory

Strategic interaction: Nash equilibrium, the prisoner's dilemma, and how rational agents behave when their outcomes depend on each other's choices.

GDP, Inflation & Unemployment

The key macroeconomic indicators: how they're measured, what drives them, and what they tell us about economic health.

Monetary & Fiscal Policy

How central banks use interest rates and how governments use spending and taxation to stabilize economies.

Market Failures & Externalities

When markets produce inefficient outcomes — public goods, externalities (like pollution), information asymmetry — and the case for intervention.

Why learn Economics?

Economic literacy is foundational for anyone who reads the news, works in business, makes investment decisions, or engages with public policy. Understanding how interest rates affect borrowing, why price controls create shortages, or how game theory explains competitive strategy makes you a more informed participant in the world.

For careers specifically, economics is the degree that consistently outperforms others in lifetime earnings because it trains rigorous analytical thinking alongside quantitative skills. Even without a formal degree, studying economics sharpens your ability to reason about incentives, trade-offs, and unintended consequences.

Start learning Economics today

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