There are online search engines that will help you identify research in your field. You probably have heard of (and used) Google Scholar. Some of the results will be open so that you will be able to read the full-text of the articles. Some will be behind a paywall. There are many tools and browser extensions that will help identify free or open copies of research articles. UnPaywall, linked below, is just one of them.
There are several places that collect free and/or open access materials, including articles, book chapters, and even entire books. Some have search features while others require some browsing before getting to specific materials.
The DOAJ and BioMed Journals linked below are only a couple of places where you can find open access journals. As you become more familiar with your field, and start digging into the OA scholarship, you will likely start to identify specific journal titles that you can continuously go back to stay current.
Although books take longer to publish than journal articles, they might provide useful information as you do research in your field.
As part of the commitment to lifelong learning, Sacred Heart University Alumni may use the resources of the Sacred Heart University Library.
Library Policies: https://library.sacredheart.edu/policies
Local Public libraries
Your local library will likely provide access to a few research databases that you can use as long as you have a library card. Although not as extensive as an academic library, your town library is worth a shot when trying to do research in your field.
Some public university libraries offer visitors access to their databases on public or guest computers. Reach out to the library before planning a visit to confirm guest access.
Depending on your profession, your place of employment might provide access to databases where you can do some research. This is true for hospitals and law offices, but extends beyond those examples.