You may want to read up more on the following topics:
1. Scarcity, Opportunity Cost & the PPC.
2. Costs of Production, Economies of Scale
3. Market Structure
4. Market Failure (Externalities), Government Failure
5. Inflation, Unemployment
7. Fiscal policy, Supply-side policies, Monetary Policy (Interest Rates)
8. Globalisation, Capital Flows, FTA