Company research can be conducted in a variety of ways including searching individual company websites. Often scrolling to the bottom and clicking on "About Us" or "Investor Relations" is a good starting point. You can usually access annual reports, 10Ks, and press releases for public companies.
Keep in mind that company press releases have a potential for bias. Meaning that unfavorable news might not be reported or reported with a positive spin. To get a more comprehensive viewpoint it is important to consult several sources.