Can someone help me understand EV leveling? I think I get a jist of it but I don't know. An I going to have grind certain pokemon just to make my certain pokemon strong because that would be boring maybe. Or can my "certain pokemon" be strong enough to face the computer or pvp just by leveling up by facing all kinds of pokemon and trainers?
It's kind of a pain and it can be time consuming, but the more you practice EV training, the easier it gets. You definitely wanna get the Power items at some point from PWT after you raise a few potent mons.
TC, I suggest you ask someone for the "virus" Pokerus. It doubles the EV's a Pokemon earns in battle. Using that along with the Vitamins you buy (Calcium, Protein, ect) you can basically EV train a Pokemon in twenty minutes once you've done it enough to get the hang of it.