Not as a start. They could be dangerous and are not very easy to handle. It's only the experienced snakeowner that should concider such snake. But don't hesitate if you have thoughts about buying a snake. They are wonderfull animals, trust me.
Snakes eat meat, in keep mostly mice and rats.
Most people are fascinated of how the snake eat, eating the whole mouse in one. If you buy a snake, consider wether or not you will be able to feed the snake. Younger snakes should be feed once a weak, adults can be feed twice a month, and adult giantsnakes such as boas and pythons can be feed once a month. Their skins are not strechable and that's why they have to change it. If a snake are going to change skin it can be seen while the whole snake seems to turn into gray.