Economics is a social science that studies society and economic entities, which are involved in our daily work in this world, based on economic theories that pass from generation to generation, allowing us to have a broad vision on the economic topic.This book presents the general aspects of economics, from the introduction to economics, as well as its division, elements, fields of study and method, market mechanism. The analysis at the microeconomic level from market mechanism, production possibilities frontier, elasticities. In the Macroeconomic field we start from the origin, history and basic concepts of this field. Finally, current topics such as the public sector, economic policy, international trade and economic globalization are presented.