This training package represents a portion of the National Training and Development Service Urban Management Curriculum Development Project. The package is designed for use by city managers to familiarize themselves with public purchasing systems. The first manual in this package introduces the concepts to be addressed and gives an overview of the other manuals in the package. Manual Two focuses on the purchasing function and is designed for persons who buy goods for public agencies. Manual Three discusses the approval function and is designed for administrators who officially approve public purchases. The fourth manual discusses the advisory function and is concerned with the legal aspects of public purchasing. The package is designed to be used as a whole or in individual sections. (MK)