A smile doesn't cost you a penny. Try to smile and be jovial it can make you and your interviewer comfortable so that both of them can have a good session. Be happy don't freak out it can send negative vibes about you.
At times interview will be scheduled for a longer duration make sure that you have enough patience to complete it. Ask them for directions about the breaks and the duration of interview and plan accordingly.
Exhibit some managerial qualities. Be at the right time to the interview probably half hour before so that you can make any changes you want to. You will feel comfortable about the place.
Body language speaks a lot about you and your personality. Don't make any gestures which can make your winning interview into a failure. Concentrate on what the interviewer is saying and maintain a good eye contact.
Explain about yourself to the interviewer that you are the right person for the interview. If you don't feel you are not the right person then it makes no point for you to apply. Making him understand about your skills and positives.
When it comes to salary have a predetermined pay package in your mind. If you are a fresher there are lots and lots of avenues to know a fresher salary. Ask your friends, relatives, family, etc they might help you.
If you are poor in your communication skills there are many chances of you being rejected for a job in today`s business scenario. Be very good in interpersonal communication skills with appropriate usage of grammar, English and vocabulary.
If the interview is a technical one obviously you will have two recruiters one examines your technical skills and the other looks for communication, body language, etc. Be prepared for technical questions they will be based upon the job description and the needs of the company.
Some of them have a bad habit of not switching their cell phones during meetings or conferences thus they distract themselves and others around them. Make sure that you switch off your cell phone before attending an interview.
You will be talking to the interviewer for quite sometime which makes it very necessary for you to have a good breath. Have a mint before going to the interview. Don't chew mint when the interview process is going.