Corns are the best beginner snake. They can be fast as babies, I'd recommend a juvenile, they're more calm if they've been handled. Nothing special for husbandry, I do provide a hot spot of about 80 degrees, but they would rather burrow than use a hide box. As far as temperament, they are less prone to strike than any other I've dealt with, and if for some reason they do, usually as babies, they strike with a closed mouth 99% of the time, so you get a tap. Feeding machines, I have a 5ft male amelanistic who gets what is leftover. And they come in such pretty colors