@Dollarwr You can start your work on pool chemistry by getting the pool math app and a test kit now. Then test your fill water and record those values.
Do you have a water softener? If so, verify if your fill water is going through the water softener or not. can do this by test your fill line (or what will be used to fill your pool) and water from your sink tap.
Now you know what will go into your initial fill. Then ask the PB what chemicals will he put in on initial fill up.
You can use Pool Math to determine what the expected values for your pool water chemistry to be when filled.
All of this is good practice for when you have to monitor your chemistry on an ongoing basis.