Fireworks???

So you all should know these Firecrackers, that you explode on Silvester.
So i want to do these in Unity. But i dont know how to start. I know how to spawn models and that, but i dont know how to make that explosion effect and the timing. Same for Rockets.

Can someone help me?

Top Toolbar, GameObject > Create Other > Particle System, them mess with the settings. And check the particle System documentation.

Some nice fireworks Here