This document contains a tutorial on building economics for a group project. It discusses key concepts in building economics like the application of economic techniques to construction projects. It also describes four characteristics that separate the construction industry from others like its temporary and site-based organization. The document outlines four categories of economic resources - labor, capital, land, and enterprise. It lists five important factors of the construction industry's impact on a country's economy. Finally, it provides two examples of how government policies can influence the supply and demand in the construction industry, such as sales tax policies and export promotion industrial policies.