Open Access @OSU Libraries: Open Access
Open Access Explained
Source: Piled Higher and Deeper (PhD Comics)
Open Access Terminology
OA Gold - authors publish their article in an open access journal
OA Green - authors publish their article in a journal, then deposit a copy of their article the university's institutional repository (or in other central repositories, such as PubMed Central), so that it is freely available to the public.
Hybrid OA - provide Gold open access only for those individual articles for which their authors (or their author's institution or funder) pay an open access publishing fee.
Preprint - version of a scholarly work submitted for peer review including only the original work of the author(s).
Postprint - also known as the author's final version, this version incorproates all changes from peer review, but it has not yet been copyedited and formatted for publication.
Author's Addendum - attached to publication or copyright transfer agreements requesting additional author rights beyond those already granted by the publisher.
Additional information on open access: http://acrl.libguides.com/scholcomm/toolkit/openaccess