Fireworks photography is one of the most fun things you can do with a camera. The energy is palpable and the crowds go nuts. Getting a good photo of fireworks can be a challenge. Here are some videos and tips for how to take pictures of fireworks.
Video by The Art Of Photography
Video by Adorama
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Video by Spyros Heniadis
Video by Jared Polin
Video by Photorec TV
Video by KelbyOne
All you need to do is the following.
Scout your location and get there early.
Add some context, foreground interest or something to show it's not just random fireworks on the sky.
Lowest ISO possible.
Mid level aperture, f8 or f11.
Long shutter speeds for multiple burts of fireworks in one frame.
Expose correctly for whatever else is in the shot.
Lock down setup.
Here are a couple more links on this: