A good way to alleviate the pain from a burn and to heal it quickly, is to put the burn under a cold running tap for about 2-3 minutes.
Then apply Calendula gel/ointment or Aloe Vera Gel, as pure as you can can get it to the affected area. This is especially good for young children, as it takes the severe pain away within minutes.
An aloe vera plant is great to keep in your home or office, sometimes also called the burn plant. Just rip a piece off and you have pure aloe gel.