You have not constructed the LED circuit properly.
5v connected to an output pin will damage your Arduino ! 
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Welcome to the forum.
You might want to try it in a simulation, so you don't damage your Arduino board.
Click on the link below for the simulation:
Start the simulation and see the led turn on.
Then try to add another led.
Sparkfun has a tutorial about breadboards: https://learn.sparkfun.com/tutorials/how-to-use-a-breadboard
Yeah... It looks like the LED isn't plugged-in to where it would make a connection.
...If electronics is going to be your hobby, get yourself a multimeter to check voltages & connections and to help with troubleshooting. And if cost is a consideration, a cheap meter is better than no meter.
I gues you are new in Breadboard, refer to the first author comment, or you may want to try the Web Application that lets you Simulate Arduino here is the link www.tinkercad.com
Luckily, the blue wire is plugged in a NC (Not Connected) pin.
Thanks, what pin should I connect it to then? I thought the NC pin was ground.
Again, luckily it wasn't ground : the way it is wired on the breadboard now (on the picture), Red wire and Blue wire are connected together (it's a short circuit). Look at post #2 to see how rows and columns are connected together on a breadboard and rearrange your layout to match the diagram.
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