How do I service a hot water heater. As far as draining the old water and ?. I will not do the oil burner.?

turn off the inlet valve and open the drain valve on the bottom, simple reallyHow do I service a hot water heater. As far as draining the old water and ?. I will not do the oil burner.?
It is pretty easy. For a maintenance guide, check out the water heater page at my source.