Remove all toys, leaves and large pieces of debris.
Skim the surface.
Empty the skimmer basket.
Empty the pump strainer basket.
Turn on the equipment, make sure it's working properly.
Inspect the cleaner, maker sure it's working properly.
Vacuum the pool if necessary.
Brush the walls and steps.
Check the Ph, keep a record of the readings.
Check the chlorine, keep a record of the readings.
Add appropriate amounts of chemicals, keep a record of what was added.
If the water is cloudy or has a slight tint of green or has algae present, shock the pool.
Backwash or clean out the filter if needed.
Monthly check the calcuim hardness, alkalinity, cyanuric acid and total disolved solids. Make necessary adjustments.