This document provides an overview of public relations as a profession and industry. It discusses the history of public relations, from ancient Greece to modern times. It outlines some of the major events and figures that shaped the development of public relations, such as Ivy Ledbetter Lee being considered the father of modern public relations. The document also describes the current public relations industry, including the top agencies, common PR activities like research and communication, and tools used like press releases. It concludes by discussing some controversies around the ethics of PR tactics such as spinning information and using gifts or junkets with reporters.