Yash

you dont trade. Theres a woman in Helios ( I think) town who uses powder to evolve trading pokemon.

Ok cool.. thanks!!

You can sorta trade with yourself. Just open the game twice, register two different accounts and have them trade. All you need to do is progress through the trade evenly in both windows, as soon as you do something in one window, do it in the other too. Might take a few attempts to get right.