Note: Determining a company's ownership is the first step to conducting research. If a company is public, more information will be available as the company is required to report its finances, while a private company does not have to report any financial information. It is also helpful to know a company's place in a hierarchy (parent company, subsidiary, etc.). A number of databases will include this information in a company profile page.
Note: Sometimes the database interfaces change. (If any of the databases look different than they do in the video, please let me know so I can update the content.) Even if it looks a little different though, generally all of the same data should be available and if you're having trouble navigating, please don't hesitate to contact me. I am always happy to help.