I learned several things from watching the LED it Up videos. First of all I learned how to make LEDs light up in general with simple batteries, and then I learned how to create circuits and how they work. LED lights have one longer side and one shorter, which are negative and positive which relates to the sides of the battery that they need to be on. Circuits use female female, male male, and female male wires in order to create a loop of energy. You need a battery and the light in general, but you need a resistor if the battery has too much energy