This informational guide provides an overview of the NASCAR circuit and its associated teams. It delves into the structure and operations of NASCAR race teams, offering insight into the inner workings of this premier racing series. The content covers a general understanding of auto racing concepts, the development and iconic eras of NASCAR, and the role of technology and data in racing. Written by native English speakers, this guide aims to offer high-quality, insightful content for motorsport enthusiasts and those curious about the world of auto racing. This manual serves as an introductory resource, detailing the NASCAR circuit structure, team operations, and the general application of racing technology. It is designed for a broad audience, providing a basic comprehension of auto racing as a sport and a look into the behind-the-scenes aspects of NASCAR. The scope includes the heritage and evolution of NASCAR, its development over time, and the communication systems employed in racing. It is important to note that this is an informational guide and not a diagnostic or repair manual, nor does it cover specific vehicle maintenance procedures or technical specifications.