I am the author of The Physical Environment: an Introduction to Physical Geography (TPE) an online physical geography textbook for students to gain a basic understanding of physical geography. It is an introduction to the processes and patterns of the physical environment and demonstrates connections between human activities and the Earth system. TPE makes physical geography dynamic through active learning and multimedia integration. Formative and summative assessments encourages student learning as they progress through the text.
I have also written Earth Online: An Internet Guide for Earth Science. Originally published by Wadsworth Publishing, this groundbreaking text introduces the reader to the mechanics of the Internet and its use by geoscientists. It is presently out of print but chapters may be downloaded for free from the Earth Online web site.