The work introduces architecture as an aesthetic discipline distinct from mere building, then explains the classical system of Orders as combinations of columns and entablature. It examines the Doric, Ionic, and Corinthian families and related varieties such as Tuscan and Composite, comparing ancient Greek and later Roman or modern treatments. Practical topics include columniation, intercolumniation, forms and names of temples and porticoes, and proportional principles that govern ornament and structural arrangement. A glossary and focused explanations aim to give beginners clear rules tied to underlying aesthetic reasoning to foster informed taste.