>>16939868
Research about the company's background if they do ask you about it
Dress nicely, semi-casual should be fine
Don't sound monotone so do some vocal exercises
Eye contact and smile when greeting and when you're done with the interview
Good posture

Firm handshake. Eye contact. Confidence, but not arrogance. Be straight forward about what you want and ask a question at the end.

>>16939886
>Dress nicely, semi-casual should be fine

whoa now, don't assume that.

If OP is going in for a career job out of college, he needs to put on a suit.

If this is some bullshit fast food-tier job, a collared shirt and slacks are acceptable.

Go sleep early.
Make sure you have clothes which are good for making first impression.
Make sure you don't smell.
Make sure you don't smile like a retard.
Make sure you can make it in time.
Don't be stressed. Talk with them like you don't need the job so you aren't stressed.
When you talk with somebody, don't stare at floor. Also you don't stare into their face nonstop.

Prepare for the two most stupid questions ever:
Why do you want to work here?
Where do you see yourself in 5 years?
Bonus question:
Why do you think the lids from the canals are oval?

>>16939890
This. It allllll depends on the job. Engineering firm yea you best be wearing a suit. Full time machinist collared shirt and nice pants. Whataburger, just walk in with sweatpants and one of those blood drive free t-shirts