This starter guide provides a quick summary on what responsible investment is, how it is done and the key forces driving its growth. It also clarifies the roles of the various parts of the industry, from asset owners to investment managers and corporates while addressing some common misconceptions, e.g. that responsible investing leads to lower returns. In addition, this guide introduces the Principles for Responsible Investment (PRI), sets out the support offered to the industry, and provides links to the PRI’s suite of online resources. These include detailed how-to guides on selected topics and asset classes, the PRI’s data portal and collaboration platform, and third-party academic research.