First turn off the valve on top of the water heater or turn off your main water valve
Turn off the breaker(if electric) or turn the gas valve off(if gas)
Connect a garden hose to the bottom drain and run the hose to your sump pump or outside
Drain as much of the water from the tank as you can, use towels or a shop vac to remove water from the floor
Call us immediately for same day water heater replacement