I've been taking them since I got my first toy digicam. Its pretty easy, just follow these steps.
1. Use a tripod and point at where the most activity is.
2. Set a long shutter speed. (my first camera could only do 3 second exposures, but still got a few good shots).
3. Set focus at infinity (manual, or use landscape mode if you have to)
4. Scream at chosen deity like Lieutenant Dan on the shrimpin boat while pressing shutter button repeatedly
5. Laugh maniacally when you capture that awesome shot and live!