This document provides an overview of SAP R/3, one of the leading enterprise resource planning (ERP) software packages. It discusses what SAP R/3 is, its key modules for finance, sales, distribution, materials management and more. It also describes SAP's architecture and NetWeaver platform, how to log on to the SAP system, navigate within the SAP GUI, and customize the user interface. The tutorial aims to help new users understand the basic concepts and functionality of the SAP ERP system.