Gary B. Shelly wrote and published his first computer education textbook in 1969. More than twenty million copies of Shelly Cashman Series' textbooks have been sold. Gary and a talented group of contributing authors have produced books on computer programming, computer concepts, and application software that are the leading textbooks in the computer technology market today. Gary has hosted the annual Shelly Cashman Institute, a week-long training event focusing on the latest topics in technology, for the past 34 years.


Mark Frydenberg is a Senior Lecturer of Computer Information Systems at Bentley University in Waltham, Massachusetts. He also serves as the Director of the CIS Sandbox, Bentley s technology social learning space, which prepares students to succeed in their CIS courses and to thrive in a technology-driven business world. Professor Frydenberg teaches courses in technology concepts, Python and technology trends. His research focuses on digital literacy, collaborative learning and pedagogies for engaging students with technology. Professor Frydenberg has presented at academic and applied technology conferences and events throughout the U.S. and Europe. He is also an author of several editions of DISCOVERING COMPUTERS, and he authored WEB 2.0 CONCEPTS AND APPLICATIONS in the popular Shelly Cashman Series.