Hi kingsizeriz,
Please allow me to share a few tips....
First of all, do arrive at the location early so that you can grab a good spot.
2. Things to bring besides your camera : A tripod is a must so that your camera will be steady and if possible bring a cable release. The black card i mentioned can be anything that is matte black and non reflective. The purpose of the card is to prevent light from entering and also as a "pause" while waiting for new series of fireworks to start. Usually at the ending stage of the display,the fireworks will be massive and at their most spectacular so make sure you have enough batteries and memory space to fire away madly.
3. Before the fireworks starts, do frame your shots properly because you won't have the time to do so when the fireworks commences.
4. I usually set my camera to manual mode, bulb, lowest ISO and f/8 - f/11 for fireworks. Depending on the weather that day and whether there are buildings behind the fireworks, you might want to adjust your aperture accordingly. If the fireworks trails are too thin, lower your f number and vice versa. Please remember to turn your flash OFF before you shoot.
When the first rocket is launched i.e. when you hear *BOOM*, remove your black card and depress the shutter when 1) u see a visible light trail falling or 2) before the rocket explodes. You'll will get different effects if you depress your shutter after the rocket explodes. Do experiment with regards to the number bursts you can capture.
Last but not least, try to get as many good shots as you can during the early part of the fireworks display before the sky gets smoky at the later stage. I hope i've made myself clear. Enjoy your shoot.