What do you cut?

go to the hospital

With a spiral slicer. The ham is put on a skewer and rotated slowly past a stationary blade parallel to its leading surface.

with the machines at the store

You start with the smallest guard on the clippers depending on the length of hair you want on the bottom of your head and cut up to whatever point on the head you want that length. Then go to the...

Ok I would STRONGLY suggest not cutting yourself because you will regret it and the scars will never ever go away. But when i cut my self i used my nails, a pencil, a blade, and earrings.