"Your next destination is Hearthome City, which is due south of Eterna City via the Cycling Road. On the way out of town youll run into on of Prof. Rowans assistants, who will check your progerss and reward your continued efforts with the Exp. Share item (if you've seen 35 or more pokemon)." - Page 65 of Pokemon Pearl/Diamond Guide. So, go to Eterna City, and go down and through the Building at the bottom of the city (leads to Route 206), and if Prof. Rowans Assistant doesnt give you it, then im not sure. Im just showing what the guide says.
how to get exp.share in pokemon blue
If you give a Pokemon not in battle an Expshare, the half of the experience points will go to that Pokemon. If you're in a double battle, and one of the Pokemon in battle has an Expshare, 3/4 of the experience points will go to it. It's a very useful item for training weak Pokemon.
go to mr stone
You can get an Exp. Share from the chairman at the Pokemon Fan Club in Iccirus City.
first go to Mr. Pokemon first have the red scale and he will give you it
go to the bike path at eterna city
Simple, Give it to one of your weak Pokemon that you want it to be strong.
In the Big building to the right of fuchsia city.
In Castelia city.. Is in one of the buildings last floor
Prof. Oak's aide will give you the item if you have more than 40 Pokemon at Route 11.
Players can obtain the exp share item in two ways in the Pokemon Pearl Game. One of Professor Rowan's assistants will give one to the player in the entrance building to Cycling Road if the player has recorded 30 or more Pokemon in the Pokedex. A player can obtain a second exp share if one of their Pokemon's ID numbers has the first three digits in common with the Pokemon Lottery in Jubilife City.
Talk to Mr.Pokemon after you get a red scale from the red gyarados