This supplementary text facilitates the introduction of international, comparative, and transnational legal issues into the basic contracts course. It covers status and scope of the U.N. Convention on Contracts for the International Sale of Goods (CISG), contract formation issues, formal requirements, ambiguity of contract terms, parol evidence under domestic law and under the CISG, irrevocable offers, performance and breach, and comparative and CISG approaches to remedies. It is designed to inform but not overburden the basic contracts course. It also contains carefully drafted problems and notes.