This excellent guide from the University of Arizona has great tips on choosing sources for your research-based assignments! The guide addresses:
There are several ways you can save your research work as you move through your project:
Create an account within a database (JSTOR, Academic Search Complete, Credo, etc.) and save articles to folders.
Send individual articles to yourself, print them, save to a thumb drive or upload to Google Drive using the database widgets provided. These will look slightly different depending on the database, and are typically found when you open up individual articles. You can also download a PDF if it's available. Here's what the widgets look like in the Ebsco databases:
Create an account in Zotero or NoodleTools. Not only will you be able to save articles here, but you can keep lists of search terms, book titles and other resources types, and there are templates that help you create your paper and/or bibliography. There are tools to create documents for all major styles/formats (MLA, APA, Chicago Style, etc.).
Create an account within MLA Style Center or Academic Writer (APA Style). There are tutorials and templates to help you create your paper and/or bibliography using MLA/APA style. Use Chicago Style Online for Chicago Style format.
Source: Yavapai College Library
These multi-subject databases access a variety of sources, including newspapers, scholarly journals, and popular articles on a broad range of topics.
These databases are designed for more subject-specific research.
NOTE: You may not always see the DOI information for a resource in its reference information, but you can look it up using the Crossref information base!
Sources: Crossref, Scribbr, The DOI Foundation