Types of companies
Company web sites can provide a wealth of information, particularly for public companies. Look for press releases, investor information including presentations and events and filings, annual reports or corporate social responsibility or "community" reports. Use information from the company carefully and watch for bias or an overly-optimistic interpretation of factual data.
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, ASX filings, press releases, etc.) as well as information about the company written by others (e.g., newspaper articles, analyst reports, articles by professors, etc.).
Finding information about a company includes the following steps: