Answer:
Teleportation is the instant transmission of matter from one point to another.
The current way proposed by quantum mechanics is that at two points there are the exact same bodies. By entangling every atom in point a to point b it would be possible to teleport you by teleporting the quantum data (spin etc) by quantum entanglement. So in essence it would be the same body it left behind at point a.
In a layman way. There are two copies of you in point a and point b. You at point a being the original. If you were thinking about say, cheese, while you were being teleported. You will complete that thought at point b. So in a way you have instantly travelled from point a to