Here are just a few library databases you might use to find articles which might otherwise be behind a paywall.
Comprehensive scholarly, multi-disciplinary full-text database, with more than 8,500 full-text periodicals, including more than 7,300 peer-reviewed journals. In addition to full text, this database offers indexing and abstracts for more than 12,500 journals and a total of more than 13,200 publications. The majority of full text titles are in native (searchable) PDF format.
A collection of eBook encyclopedias on nearly every subject, available 24/7 through the Gale Virtual Reference Library platform.
Covers newspapers, magazines, wire services, federal and state court opinions, federal and state statutes, federal regulations, and SEC filings. Updated daily.
Here are some Open Educational Resources (OER) in the form of journals and articles.