# after you defeat or catch the red gyrados you pick up a red scale. # then afteryou get it go to mr pokemons house (the guy who gave you the mystery egg) and he will trade you your red scale for the expshare.
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
go to the bike path at eterna city
first go to Mr. Pokemon first have the red scale and he will give you it
You can get an Exp. Share from the chairman at the Pokemon Fan Club in Iccirus 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.
You can find the Exp. Share in Rustboro City or in the Lilycove Dept. Store.
Talk to Mr.Pokemon after you get a red scale from the red gyarados