This document discusses software as an educational resource. It describes two types of software: system software like operating systems, and applications software that performs specific tasks. Applications software can be custom software made for organizations or commercial software for personal use like writing papers or playing games. The document also discusses Microsoft Windows as an operating environment that provides a graphical user interface. Finally, it provides guidelines for evaluating instructional software, including checking for clear explanations, accurate information, and relevance to learning objectives.