Economics is split into two parts
Microeconomics and Macroeconomics.
In Micro you learn about economic agents- firms, consumers & government
Demand and supply, elasticities, subsidies and tax, environmental economics and wages. Its more to do with firms but remember this is not business studies
Macro is the global scale. I personally find it more interesting & you can see how things link better than micro. You learn about inflation, fiscal and monetary policies, trade and exchange rates.