This document introduces basic concepts relating to factors of production. It defines production as the process of converting inputs into outputs. The main factors of production discussed are land, labor, and capital. Land refers to natural resources and is a limited, immobile factor. Labor is the human factor and includes all physical and mental work. It is perishable and workers have varying levels of efficiency. Capital consists of manufactured goods used to produce other goods and is a man-made, mobile factor that depreciates over time.