Things need to know for the interview

Know the name and current position of the person you are about to meet!
Dress discreet and be well-kept!
Shake hands firm and confident during introduction!
Be prepared about the company history/products and services!
Look squarely in the eyes throughout the interview!
Give obvious and concise answers to questions, backing them up with past examples, if possible!
Be inquisitive with a smiley approach!
Ask questions related to the job you are applying for

Things NOT to do

Do not be late!! (if you happen to be unable to keep the time, make sure you notify the person you are going to meet in advance!)
Make sure you give answers to questions other than a simply „yes” and „no”!
Never make negative remarks on your current or previous employer.
Remember not to ask salary and bonus-related questions during the first interview session. Wait, until the interviewer brings this issue up.