How do I code an analog turbidity sensor?

Hello everyone! I am a 14 year old who needs to learn Arduino in a very short amount of time for our research project. We were originally going to use a digital turbidimeter for our project, but due to high costs, we are settling with an analog turbidity sensor. I have no background on Arduino whatsoever and I was hoping you guys could help me figure it all out? I already read the tutorial of DF Robot but don't understand it. I want to at least understand what the code does. Thanks.

It would be easier to help if you asked specific questions.

we are settling with an analog turbidity sensor.

Can you please give us a clue as to which sensor you are using ?

We are looking to get this one:

Start by looking at the Analog examples in the Arduino IDE

coconuts_n_cashews:
We are looking to get this one:
Turbidity Sensor Philippines Analog - Makerlab Electronics

if you following the link there there is an ACTUAL example here: