"Modding"

Hi guys, im a bit of a noob here and arebt up with all these terms and things, what is modding? and heat sink and driver and all this stuff?

Modding is changing a light to be mote like your want it. Change driver, emitter, do resistance mods.
The driver is what powers the led and allows for modes
The heat sink is what the led and driver mount on to dissipate heat away.