Without assuming prior legal knowledge, books in the Directions series introduce and guide readers through key points of law and legal debate. Questions, diagrams, and exercises help readers to engage fully with each subject and check their understanding as they progress. This introductory chapter explains how contract law is structured and how it fits into the overall scheme of the law of obligations and into English law more generally. It explains the boundaries between contract law, torts and unjust enrichment, and restitution. It also explains the wider range of situations covered by the law of contract, and puts the law of contract into its social and economic context.