After a successful job application the next step is to start preparing for the interview.
Below are some of the Basics needed for a successful interview, once you follow it then you are good to go.
The first thing is to do a research about the company that contacted you for interview try and contact recently employed staff to know more about the company especially how they conduct their interview
First impression they say last longer, your Dressing mode willshow the kind of person you are, mind you the interviewer will first judge you by the way you dress
Another thing is to practice interview with friend/family, practice make perfect , take your time and when you are on the Hot seat like Who wants to Be a Millionaire feel at home and answer the interviewer in a polite manner
Be careful of what you say, dont just say anything because what you say or do will either get you that job or you keep searching.
Immediately you enter the interview hall you must not sit down until you are told to do so,it shows you follow instructions and not do things your own way
After a Job interview my friend make sure you say Thank you which is a good interview etiquette
And above it all Pray, Prayer isthe master key

source: http://livebetalife.com/basics-needed-for-a-successful-interview/