Know a little something about where you're applying. Even if you know a little about where you're applying, your chances of being hired increases. Use it to your advantage. Have a strong grip when shaking hands. Since you are going to be asked quite a few questions, it would be best if you practice answering to possible questions. Whether you want to write it down or have someone practice it with you, it is very helpful because you know what you're going to say instead of worrying about saying the wrong things.