this is your first time playin this game right.. look, the thunder stone becomes available once you arrive at celadon city ( check your town map), to obtain it u hav to enter the celadon dept. store n go to the second or third floor i think, you talk to the salesman n u can buy a thunder, fire, water or leaf stone there
1 thing, don't evolve it into Raichu until level 50. You get light screen then. If that is not your thing, at least wait until you have Thunderbolt, which is arguably the best electric attack in the game.
I say this because Raichu doesn't learn ANY moves leveling up like Pikachu does.
PSN: NDgamer112 To avoid innuendo, the Wii should be called the Perfect Nintendo Entertainment System, or PNES for short.