You go up to Eterna city and then go to the little place in between Eterna city and the cycling road and talk to the aide and he gives you the exp. share.
go to the bike path at eterna city
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.
you can get it in the room joining eterna city to cycling road. one of professor rowan's assistants is there and he will give it to you after you have obtained a certain amount of Pokemon
go to mr stone
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.
ok you go to the eterna city.then you go to the box that cuts eterna city and cycling road.there will be a man just next to the entrance of the box.talk to him and then he will give you expshare.then...tadaaaaa you have expshare.expshare allows you to let your Pokemon and the attacker Pokemon get 1/2 of the exp points than it would have if it battled.the Pokemon can only gain this much of exp points if it didn't battle and has expshare eqipped.it can be great for leveling up week Pokemon.
So, when you head out from Eterna City to the cycling road, you will enter a room with two women. In the room, there will also be a scientist. Talk to him and you'll get the EXP share.
Ok you go to eterna city.Then you go to to the place that cuts etena city and bicycle road.there will be a man just next to the entrance.talk to him and he will give you expshare.then...tadaaaaa you've go expshare.expshare allows you to give Pokemon 1/2 of the exp points that they would of have if they battled.but they only gain half of the points if they didn't battle with expshare equipped.
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.