EV Training works the same way as in the 4th Generation games. The only difference is places and the pokemon. Go here
and scroll down to where it says Effort Values. Then just click on the stat that you're looking for. It'll list out the pokemon that give out those EV's, exactly how many EV's they give, and where they can be found by clicking on the pokemon's name. You can also get the EV training items from Gear Station by building up BP and buying them.