Blink a LED

 
Schematic Diagram

This is the basic schematic diagram with D1 going to a 330 ohm resistor
the other end of the resistor goes to the anode (positive) side of the LED
the cathode (negative) side of the LED goes to ground.
Breadboard Wiring

This is how it should look wired up to a breadboard
Python Code
 
If you have any question feel free to contact me.