This document discusses open access and defines it as free access to peer-reviewed scholarly research. It outlines the benefits of open access such as increased visibility, readership and potential impact of research. It also discusses how open access can be achieved through open access journals ("gold route"), repositories ("green route") or hybrid journals. The document recommends ways for librarians to promote open access, such as launching institutional repositories and open access journals, and educating academics about open access options for publishing and depositing their work. Major organizations that support open access like UNESCO, EIFL and IFLA are also mentioned.