Fill the base of your waterpik with lukewarm water (room temperature water will also work).
Adjust water pressure of your apparatus. Start with minimum pressure and turn it up a bit once you get used to waterpik flossing.
Lean over the sink and place the pipe of the waterpik in your mouth, near your teeth. Press the 'on' button to allow the water to flow.
Spray water on your gum line with the waterpik. Focus on the areas between the teeth and linger for a moment when flossing between each tooth.
It is better to close your lips around the waterpik pipe; this will keep water from splashing. Don’t keep water in your mouth, let it leak into the sink.
Once you are done, just turn the waterpik off and spit out any remaining water.
Rinse your mouth with a cup of water.