Basic LED "Blink" not working

I've probably used the most basic blink program. Forgive me as I'm new to Arduino, but I've connect pin 8 to the negative side of a red LED with a 330 ohm resistor(orange-orange-brown) thin connected the positive(long side) of the LED to GND. Using UNO 3.It's not working

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spycatcher2k:
Is you LED the wrong way around perhaps?

Sounds like it is.

power to the resistor. to the long pin, then the short pin to the arduino.

blink away !