Hello, I have dji Phantom 2 vision plus. What does the led s mean on the drone?  I have two red lights in front and 2 green on the back.

You need to read the manual buddy. Knowing what the LED lights mean is the difference between you crashing and burning on your first flight or having a good time and landing safely.

The two rear lights are the most important ones to understand. Yes please read the manual and the little card attached to the transmitter.

There are a different set of instructions, separate from the ones you found in the box.

http://www.dji.com/product/phantom-2-vision-plus/download

You need to read and understand these.

I hope you haven't tried to fly without reading up completely on this quad!