1. Open the water reservoir by lifting the lid. Add room-temperature water (distilled water is recommended) into the reservoir up to the fill line. Do not exceed the fill line. 2. Add 8-12 drops of your favorite Young Living essential oil into the water. 3. Replace the lid to cover the water reservoir. 4. Plug in the Home Diffuser and push the power switch to start diffusing. 5. When water runs out, the diffuser will automatically shut off. 6. Press the power switch to cycle through the three-mode setting: Mode 1: Green light - Constant diffusion Mode 2: Red light - 30 seconds intermittent diffusion Mode 3: Off 7. Press and hold the power switch for approximately 2 seconds to turn on/off the ambient LED light. Notice: Due to the mist output of the Home Diffuser, use caution on surfaces that are sensitive to water.