I opened up my finder and tried to drag my hd icon onto the desktop thinking it would create a shortcut and it...

Exploded!!!, WTF is this a joke mac users play on pc owners?

Im new to macs so im not sure how important the icon is or how to get it back
If anyone can tell me id be greatful if anyone can tell me, im sure its pretty simple
this is my new baby and i donr want to destroy it