Let's build a time machine  

I belive that if we put our heads togethe we could bild a time machin. All we need is information. I evin have some ideeas.
Lets start with E=mc2 That means that is imposibile for an object that has mass to reach the speed of lrght because it wold require an infinit amound of energy, however if an object would reach at least 10% the speed of light ith mass will increes so much that it will have its own graitational field, meening that the time passing aroun thet object is alterd so you could travel several years into the future.
But going into the future is easy the trick is go go back in time. But that means you have to travel faster then the speed of light and that is imposibile for objects thet have mass. But that still means that you coud change the past by sending messeges back in time throu a beam of particles that have no mass like the photon. That tehnology exists today. Beens of light have allready been teleported from one place to another. So how do they do it? Dose anyone have any information on this subject?