Open Access (OA for short) can best be translated as "freely accessible". Literature published in this way is freely available on the Internet. There are various ways for authors to publish something OA. The two most important are Gold Open Access and Green Open Access.
The article is published in a Gold OA journal and is immediately accessible barrier-free on the Internet. When choosing a journal, it is important to pay attention to quality control, e.g., that there is a reliable peer review process. When it comes to choosing trustworthy OA journals, the Directory of Open Access Journals (DOAJ) can help.
Gold OA often requires the author to cover the publication costs. The advantage of Gold OA is that the author's publications are immediately available to a wide audience, are easier to find, and are thus cited more often.
In this case, the author uses his/her right to parallel or second publication and saves a copy of the article on a website or in a repository. These are often preprints or postprints. It is important, however, to follow the publisher's policy. These can be found in the Sherpa Romeo database. The Elektronische Zeitschriftenbibliothek (ezb) offers a similar tool, with which a search for several articles at the same time is possible.
Publish-and-read contracts, or transformation contracts, aim to transform scientific publishing and promote more open access. Subscription models and open access costs are linked; in the long term, access should be paid for entirely through publication costs.
Currently, the Geisenheim University Library is participating in the transformation contracts of the DEAL project with the publishers Wiley and Springer Nature.
Hochschule Geisenheim University has an Open Access Publication Fund through which publications in fully Open Access journals (Gold OA journals) can be subsidized. In the "Guideline for the Open Access publishing fund at HGU", you can find out which criteria your publication must meet in order to be eligible to apply.