To be able to synthesize the sound what I hope, what should I study?

For example, I would like to make explosion sound.

But I don't know how to make it.

I would like to know how to make sound effects what I need.

I would like to know what should I study.

Check this out: http://www.obiwannabe.co.uk/html/sound-design/sound-design-all.html

there are bombs too

Thank you very much for your help.
I'll read it.