How do you level up Pokemon easily?

Answer 1

Easy! Battle a lot of Pokemon. When you have just started the game and do not have any Pokeballs, go in the Grass feilds in route 29 on your way to Cherrybloom or whatever it's called. Talk to your Pokemon a lot here, or just walk around. You'll get to battle, and after you do, move around and then come to that exact spot. You will get to battle again! Do this until your Pokemon has level ten. he'll be more powerful! But, if you want him to be even MORE powerful, you'll just have to spend a longer time in the feild when your SUPPOSED to be doing a quest. You can do this with any of your Pokemon, any time.

U R WELCOME!

Answer 2

Here is the fastest way possible it can't be any faster than this: Have the Pokemon that your training be traded to you from a firered or leafgreen or sapphire or ruby or emerald or colosseum or xd gale of darkness. Either way now you must get the item lucky egg which can be obtained from a chansey which can be caught at the safari zone in fuschia city, its rare though. Now go to seven island with the Pokemon your training and go to sevault canyon go southward until you se four trainers there is a camper, a Pokemon ranger, a battle girl and a tamer, use the vs seeker to rematch all four but the most significant trainer is the Pokemon ranger she has a level 56 chansey and if you beat it with your Pokemon and have it hold the lucky egg you will receive almost 6000 exp points! Its guranteed your Pokemon will level up faster, now beat the other trainers then go south and go in the house talk to the guy say yes to his question then go back and use the vs seeker again and repeat the cycle over and over again until your Pokemon is level 100.