 Hall started buying shares a few at a time.His ability to translate complex financial concepts into simple English through the use of slices of cake led to him becoming director of course development at Leo Fleur, a company selling training materials for Wall Street examinations.In 1986 he became director of marketing for the Chicago-based Longman Financial Services Institute in creating and implementing marketing campaigns for training programmes and products and consequently was executive director of the New York Institute of Finance.