Controll LED Strip with Arduino BLE
Addressing individual LEDS on a simple strip with LEDs in series and/or parallel connection is just not possible. 
Connecting the strip directly to an output pin is completely nonsense. Forget it.

You need a strip with digital LED controllers populated, as described (for instance) in another link mentioned in your second link: http://www.adafruit.com/products/306

Have a look at this, then I'm sure you will come back with more detailed questions ;-)