If just there was an easy answer to this!
First of all, what has always worked for me is to be well prepared. For the classes, that is. But that might be because I am kind of the intellectual type...
The number one tip though, is to get some great friends (both guys and girls). This is not something you 'learn overnight', but be really friendly overall, be yourself, but don't be 'the nice guy' who is getting pushed around. This approach works for most things here in life...
I guess that I could write a lengthier post about this topic on the blog.
I have to go now, just checked in for a second.
Talk soon Brent.