If a patron asks you a question about open access, or scholarly communication in general, that you cannot answer then please refer them to the liaison librarian responsible for that area. Liaison librarians can then consult with DeDe Dawson if needed.
Routes to OA: Green vs Gold
Gold OA is publishing in an OA journal (or hybrid journal) and the article is immediately available OA. Sometimesthere can be an article processing charge (APC) for this.
Green OA is publishing in a conventional journal and then self-archiving a copy in an open online repository. Often there can be an embargo on the article, so it is not immediately available OA.