Research should always be your first step before an interview. Gathering background information on employers is crucial to successful interview preparation.
An employer will expect you to know something about the company, and expect you to know why you will fit in well there. You need to be prepared to answer the questions, “What do you know about our company”? and “Why do you want to work here?”
Knowing as much as possible about the company’s past performance and future plans can also help you better explain how you can add value to the company.
Before the interview, review the company’s website, particularly their “About Us” section. Also check out their LinkedIn, Facebook, Twitter, Google+, and other social pages to see what information the company is sharing.

The more information you have, the more comfortable you’ll feel while you’re talking to your interviewer.