It is easier to find information about public companies (those that sell stock to shareholders) than about private companies (those that are privately owned by an individual or a group). When looking for information about a company, consider both information from the company itself (e.g. the company website, SEC filings, press releases) as well as information about the company written by others (e.g. newspaper articles, articles by professors).
Get an overview of the company, find out if it is private or public
Find the company website and review it carefully--especially the sections for investors or media/press
From the main search page, be sure to choose Company Information. Use the drop-down menu to look for company profiles; analyst reports, mergers and acquisitions; or SEC filings.
Find Financials, Subsidiaries, Products, Executives, Industry and More in the middle of the screen
Locate related information such as SWOT Analysis, Country Reports, Market Research Reports and More on the left side of the screen