I'm a realitive "newbie" here but can tell you if you'll follow the instructions/recommendations here you'll have water so bright it will hurt your eyes!
As Jason said number 1 is a good test kit,without it your "shooting in the dark" and probably wasting money too. You mentioned adding 4 pounds monday. Most here will recommend liquid chlorine. It will do what you want without any added "goodies" you dont want. A good test kit,, liquid chlorine,, some cya,,, the pool calculator and your gonna succeed... Oh yeah, a dose of patience is also needed,I'm always lacking this important ingredient.....