I can't seem to find a tutorial based on a light sensor I've purchased (and received) that doesn't include a sensor shield...
As I'm new to Arduino, I have yet again no idea what to do with this. It only has 3 inputs, but I am afraid of blowing it.
The back of the sensor is labelled -, + and S. Here is a labelled picture of the sensor:
You would plug the - wire into ground, the + wire into 5 volts, and the S wire into the Arduino analog input pin (A0..A5). The sensor shields have the 3 pins grouped together, so that you can use a 3 element wire to connect them with one cable. The shields make it simple to plug in multiple sensors since they provide a ground and power pin for each digital and analog pin.
If you have more than one sensor, you likely need a breadboard if you don't get a sensor shield in order to plug each sensor into both the ground and power pins. On most breadboards, there are two columns on either side, a red column, and a black column. You plug the 5 volt pin into the red column, and the ground pin into the black column. Then for each sensor you would plug the - into the black column, the + into the red column, and the S wire into the pin.