The North American Continent, particularly the United States, is the hub of business activities that affect almost all countries in different regions of the world. It is not unusual therefore that a system of classifying industries for practical and business purposes, is devised in North America, hence, the North American Industry Classification System. NAICS, as the North American Industry Classification System is known for short, is as applicable in countries far removed from North America, as it is in Canada, the United States, and Mexico. For trading purposes, NAICS serves as a model and a standard that provides guidelines for the production and delivery of services and products. There is hardly any product or service in the world that is not named in NAICS. People from other countries can use NAICS as a resource for trying to penetrate market niches in North America. In the same manner, people from North America can use NAICS for exporting products and services to other countries. NAICS facilitates the exchange of information about products and services. Initially, Active North American Industry Classification System is designed as a guide for the preparation and examination of entries in the TVTyme.net website. As later realized, the guide can be used for all other purposes that deal with products and services not only prevailing in the North American Continent, but throughout the world as well. The book is structured such that one is never more than a page away (forward or backward) from the target object of examination. The page header indicates the main sector in the economy. The page footer indicates the subsector as well as the industry group. Automatically, the page header and the page footer change as sectors, subsectors, and industry groups change. The page footer plays a significant role in the search for information. Another helpful feature of the book is how the Table of Contents is structured. Instead of providing a separate page or appendix to summarize the North American Industry Classification System, the Table of Contents provides the information from sector down to the industry group. Except for some verbs, adjectives, prepositions, conjunctions, and few other unhelpful words, every word in the book is indexed. If a product or service is named in the North American Industry Classification System, one may likely find it in the index and locate where it is mentioned in the System.