Want to find your way (literally) around an Arduino Uno? Well look no further - here is a video introduction to the hardware that's a walk in the park.
If you are not a hardware/electronics expert then it can be tough to see what all the colored bits on a circuit board actually are. You look at them, but due to the complexity you just don't see them.
So it is with the Arduino when you first see it - later it becomes as familiar as the back of your hand. It is important to know the layout of the Arduino because you are going to make connections to it and you need to have a rough idea what the different parts do.
This video, created by engineerzerochannel walks you and a group of tourists through Ardinuo park. On the way you will see the various parts of the Arduino and an LED dropped in by helicopter and connected up.
It's fun and it makes you very glad that the real thing is so small.