How Do Snake Give Birth?

It depends on the snake as some snakes lay eggs and others have live born here are two examples for you
a CORN SNAKE has eggs and they come out of the long flap near the end of the snakes tail. It takes a few weeks for the eggs to hatch and the snake will break through the shell and take its time to come out of its shell, try not to handle the eggs to much as they are soft ad there is a chance that they will die.
And a BRAZILIAN RAINBOW BOA has live young that come out the flap near the end of the tail but these are in sacks of which the young snakes will break out of but sometimes need a little help but carefully as they are quick and they will bite to defend themselves as in the wild the mother will just leave them to fend for themselves, and off they go into the world
I only know this as i have seen both as i keep snake myself, I hope this helps you

The eggs come out of a flap on the stomach near the end of the tail