Get exp points
Edit:Go into grass and wait for a Pokemon to appear, Then once one does make it faint and you'll get EXP and you'll level up if you keep repeating this.
eh ... you beat other Trainers or wild Pokemon ... did you really not know that?
Train your pokemon.
level 100
level it up to level 21
any level up to 100
level it up
level up or action replay
level your Pokemon up to 80
You have to get Piplup for the starter Pokemon and level him up or trade for it.
Level it up to level 34.
you battle and level it up
To evolve turtwig [pokemon pearl/diamond] level it up to level 16.
umm.......i think.....you.....TRAIN THEM UP!!!!!!!!