This book explores the advent of lunar commerce including the potential scale and timing of the initiative, the associated revenue potential and the potential risks and uncertainties. Specifically, it discusses the reason for the increased interest in lunar commerce, which lunar markets will be part of the initiative and how much of it will be commercial or dependent on government funding. It provides an easy introduction to the content of the Lunar Commerce Portfolio, which was recently issued, under the author's leadership, by the Working Group on Lunar Commerce and Economics of the Moon Village Association, which has Observer Status at the United Nations in Vienna.