I just graduated with a degree in Mechanical Engineering and I've got my first interview tomorrow at 10 am. I've worked various jobs constantly since I was in my teens but I've never had a truly professional interview.

I figured this was probably the best place for me to come for advice. I've been lurking for a few months now and you guys have been a great source of info for a variety of things. The job I'm interviewing for is sort of a middle man between field employees and customers as part of a Procurement group. I'm fairly extroverted when I have any experience at all in a situation but this is my first time in a real interview and have no idea what to expect or how I should act if x or y things happen. I'm going to look around the web obviously but I find the internet tends to be full of mostly BS whereas the TRP seems to always be relatively on point for any given topic.

I'm 6'3 very muscular and fairly handsome so I understand all that puts me at a slight advantage as it gives me a presence. Still would be great to get any insight from you guys. I'm also fairly positive my interviewer is a woman so I don't know if that means anything but felt it was worth noting to you guys as it might have some importance.