How to Handle Snakes Properly

I've had reptiles all my life since I was a kid, but I've worked with kind of, you know, professionals over the years to get me through different stages with snakes. So initially you want to work with slow moving non dangerous snakes and see how that is. And then you want to be working with fast moving venomous snakes. Then you just move up and up and up. You get to a point where it's like elapids, cobras, mambas. But initially it's like pythons and stuff like that. That's my only black mamba experience. We've done pretty much everything. Any kind of super dangerous animal that you care to mention