Do not give liquor to the person, thinking that this will help him. Specific antivenin serums are in stock for various species of snakes. Learn to identify the various snakes in your locality. Massive doses of vitamin C may save a life. Keep calm and work carefully.
Excitement speeds up the blood flow to the heart.
In most cases, the person does not die. But pray and get yourself prepared for whatever may happen. If able to do so, a couple hours later, take a steam bath or something similar, to sweat out the poison. Throughout all this time, you should eat no food. If, after several hours, the bite area is still swollen and painful, put kerosene on a cloth and apply it, keeping it wet for several hours.