He has specialized in the psychology of online selling since the mid-1990s when e-commerce began. His clients include large corporations, medium-sized firms and small businesses. Graham speaks about the psychology of selling online at conferences and events. He is also the author of 30 books and is one of the founders of the online radio programme, The Sales Chat Show. Graham is a visiting lecturer in Ebusiness at the University of Buckingham. His own academic background includes a degree in human biology, a degree in psychology and two Masters degrees, one in education and the other in science communication. Graham is a Member of the British Psychological Society, a Member of the Society of Authors and a Fellow of the Professional Speaking Association.