When I started here, I was as lost as you are.
What we teach is how to take care of your own pool. The methods are almost polar opposites to what the store's and pool services tell you to do. It's because we test DAILY and take action DAILY that these methods work. The standard "dump this in the pool, call me in a week" doesn't happen here. We take action by testing, making a decision, adding a measured chemical to the pool (in the safest way possible) and testing again... in an hour, if need be. No assumptions are made, we test to know the issue and take the appropriate action.