Ok, So I have one of the infamous test kits and I'm about to open up my pool this week. I have very general questions.

Is there a specific order in which I should adjust my values. I read a lot of posts and am confused by how the values interact.

What are the desired TA and PH for a vinyl lined IG pool?

Is ther an optimal value for CYA? I am confused by the sliding scale I see here that describe chlorine requirements in terms of CYA level.

I have tried searching, but it has only added to my confusion.

Sorry if I'm asking dumb stuff!!

My pool is a basic 20x40 with 9.5 foot deep end inground vinyl