How long have you been using pucks? They'll drive your CYA up and cause you to need more chlorine. If you haven't been using them long you can dump in a couple bottles of plain bleach to get your FC level up and keep the pool from turning green. Then add a half bottle a day until you can get a good test kit and go through pool school to learn what you need to do. If you've been using pucks for a while you could get the HTH 6way test kit to check your CYA level, then use pool math to go from there. Anyway you go you need to get some chlorine into the pool or it'll turn green fast, and that's harder to fix than staying on top of it from the beginning.
You've come to the right place, there is lots of info on this site for the private pool owner, and lots of friendly people willing to help.