This document discusses basic economics concepts and systems. It defines microeconomics as studying individual behavior of consumers and firms, while macroeconomics studies the aggregate behavior of the entire economy, such as unemployment, inflation and GDP. It also lists the three basic factors of production as land, labor, and capital. Entrepreneurship is described as investing time, natural resources, labor and capital which involves risks. The three basic economic problems are outlined as what to produce, how to produce, and for whom to produce.