1 - Use some water-base lubricant for easy insertion and comfort.
2 - Find a comfortable position (leaning on a chair or standing with a leg up), relax your vagina muscles, and slowly push in the balls as far as they will comfortably go.
3 - Let the app guide you through your workout. Choose a voice-guided training or and exercise training. Set your goals and rewards!
4 - Carefully clean the exerciser after each session with warm water, and spray it with a suited toy-cleaner. Let it air-dry.