This book represents the most comprehensive and accessible guide to understanding commercial law available. It covers all the topics taught on commercial law courses, not as separate elements, but as part of a coherent whole. Each subject is related to the others, and linked by fundamental principles and concepts such as ownership, possession, attornment, notice, and good faith. The emphasis throughout is on the practical application of the law in its business context. A detailed and authoritative introduction covers the foundations of commercial law, whilst the inclusion of extracts from Commonwealth sources provides students with otherwise unavailable material.