Control led strips (warm/cold) with gesture sensor and ardui

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I got this 12v warm/cold led strips ( http://amzn.to/21GrhGq ) that i want to control with the arduino and a distance-gesture sensor. ( http://bit.ly/1TN6eyD )

I need to control 2 things

Dim the lights

from UP: maximum brightness to Down: light off

and

change from warm to cold using gestures

Right: Cold Left:Warm

But i don’t have experience with coding or arduino, so i don’t know how to start. Could give some guidance?

Thanks in advance