Your job interview process will include identifying companies / organizations to which you want to apply, finding information about them and the industry in which they participate. The sections in this area provide you with some sources that will help you do this research.
Mergent Intellect and Orbis will help you find information about a company.
Use ReferenceUSA to find potential companies to which you might want to apply for a job in a particular industry.
These databases will help you find information about an industry, which you should become familiar with when you set out on your interview.