I have a character who can teleport to essentially anywhere he can think of, assuming he either has been there before, or is given exact coordinates.
The problem is, I can only think of two ways to complete this:
He disassembles his molecules at the same time as he is rearranging them at the target location to copy him. (Yes, he does have complete control over molecules; he basically has matter manipulation powers on an extremely powerful scale- he can rearrange them, fuse them, give them energy, etc, even down to the scale of single molecules. This is done semi-subconsciously, but he can control it when need be.)
He transports his molecules at the speed of light to wherever he needs to be.
I have problems with both of these. For (1), doesn't disassembling his molecules and making a perfect copy of them elsewhere mean he's cloning himself and then killing one of himself? That's not nice, and I don't want to use that, unless we can find a way around that. (A way around that is not constituted by changing physics so that he isn't killed.)
For (2), that means he can only travel at the speed of light. He is going to travel extreme distances (several light-years at most), so that should mean he takes several years to get there, including through deep space where he doesn't have any molecules to give him air or something. Faster-than-light travel is not possible for him (though such technology exists) because he has limitations. Also, this isn't really teleportation. It's just superspeed.
How do I create a plausible way to teleport (based on either 1 or 2)? I can't just say "Yeah, he knows how to do this despite being one of only six beings in the known universe who have these powers and therefore never has received training in this."
Also, my character needs to learn to master this technique. What is the best way to do this without killing himself? It's not plausible that he gets it on his first try. (Seriously, you try rearranging your own molecules and surviving.)
Edit: I should have made this clear based on the responses: the only power he has is molecular manipulation. He can use this to various effects: for example, he can emulate thermal powers by giving or taking energy from molecules, he can emulate electric powers by moving electrons, he can even emulate biological powers- that is, he can change the biology of an organism so that they have changed strength, speed, metabolism, reaction time, etc. (I know this last one probably shouldn't really work in real life. But then again, molecular manipulation probably shouldn't really work in real life, either.) But I still like the wormhole/spacetime manipulation solution, and I also like the quantum entanglement solution. Thanks, everyone!
Edit #2: I just realized that my light-speed transportation system doesn't pose any problems for him (courtesy of everyone who reminded me that my use of Lorentz relativity is wrong, oops.) But the problem still stands for everyone else who's gonna be waiting forever for him to come back.