The twentieth century not only brought us the dawn of the Information Age, but also continues to bring us rapid changes in information technology. There is no indication that this rapid rate of change will be slowing— it may even be increasing. As we begin the 21st century, computer literacy will undoubtedly become prerequisite for whatever career a student chooses. The goal of the O'Leary Series is to assist students in attaining the necessary skills to efficiently use these applications. Equally important is our goal to provide a foundation for students to readily and easily learn to use future versions of this software. We do this by providing detailed step-by step instructions combined with careful selection and presentation of essential concepts.