well . . . I have been to a few concerts and I have found that the easyest way for me not to get hurt is to just go crazy. You'll probably find me as one of the leaders of a circle mosh or other such activities . I'm a fairly big guy so that works well for me, but I don't know about anyone else.
Now as for concert stories go one of my favorites was when I when to the Rob Zombie concert with some cheap $40 balcony tickets. I was a little disapointed with the spot but I would take it. It turnes out though, that my best friend (who I won't name) was working head of security there, and so I started talking to him jokingly telling him that I would pay him if he could get me a floor pass. But aperantly he took me seriously and for thirty bucks he went and grabed a floor pass for me! It was a kick ass show with awsome pyrotechnics. Now I am eternaly in his debt for this favor!