I have read pool school several times, I tested my water and put the results into the math calculator, but I am still a bit confused as to what to add first? The pool is currently finishing filling...I tested my full pool tap water and the results are: Ph 8.4, Free Chlorine 0, Total Alkalinity 180, Stabilizer between 30-50 and 100. I used a Aquacheck test strip. So what do I i add first? I have mini chlorine tablets and shock from the pool's previous owner. Thanks for helping out this "pool virgin".