This document summarizes an open access presentation given by Iryna Kuchma at ICTP in Trieste, Italy in 2011. It defines open access as free online access to research results coupled with the right to use those results. It discusses how open access repositories can increase visibility and usage of research by making outputs openly accessible. It also notes that surveys show most researchers believe open access is beneficial and publicly funded research should be openly available. The presentation encourages researchers to publish in open access journals or self-archive in repositories and work to advance open access policies.