7. DO make friends with the security guards and publicists/promoters
Security guards at venues can help you out immensely when you’re shooting, or they can make your life a living hell. Sometimes there’s nothing you can do, but if possible, try to make friends with security, especially at your local clubs and arenas. They know everything about the venue, and can often point you to nooks and crannies where you can store your gear while you’re shooting.
As for the promoters/publicists, sometimes they can get you access to places you otherwise wouldn’t be able to shoot, including backstage, and at times, even on the stage itself (this is much more common at EDM shows).
BONUS: DO have fun
This one should be self-explanatory, but you definitely should have fun when shooting shows. You have the best seat in the house, and when you start shooting bigger acts you’ll be getting photos of people that most folks would kill to see. Enjoy the opportunity!