Take notes of every variable you can, obviously the genetics can vary but RH, Temp., PH, Soil, Medium, feeding etc.
It may seem overwhelming but really it’s like 6 numbers 3 times a day into a CSV file a lot can be automated. This will allow you to go back and see what goes wrong or right, hey my relative humidity dropped on lights off to 34% this run and last run it stayed at 45% I got .8 gpw on the latter run I want to keep those numbers. So on and so forth.
It’s essentially the scientific method. Follow advice of those that grow nugs you lust after. To me a good coco coir pith with amendments is a great beginning base but loving soil is good too. All depends on what your time frames allow. Hell DWC is fantastic