first, you have to get the contest pass, which i think is in fallarbor town, but save, then go there, just in case it isn't there. so i think that is the first contest.:)
have alot of luck
All you have to do is talk to the lady in the front enter a contest with one of your poke'mon! :)
in fallarbor town but in Pokemon ruby and Sapphire
give it to your pokemon, it will raise its Contest condition.
In the contest hall in Slateport City(Ask Mr.Briney to bring you there.)
Pokémon Ruby/SapphireThis item can be found in Verdanturf Town, at the Contest Hall.
A little girl will give it to you in the slateport pokemon contest room
well to start you have to win a ribbon with the same Pokemon in slateport (the first contest building) then fallabor town (second) then in lilycove (Master contests)
by getting berries and going to contest halls to blend them.
SLATEPORT CITY.Kimm57:Go to Slateport City, then go southwest of the Pokemon contest
you have to win a contest throughout each building.
you can get yourself a pokéblock case at the lilycove contest hall.