go up to them and click a then you will be in a pokemon battel
Get it from one those trees or whatever they are
you can't
Look in Viridian forest and headbutt trees.
pineco,aipom
go to ilex forest and talk to an earthquake guy
Headbutt trees on route 38
you can find them anywhere they are in apricorn trees that you can click on
you need to use headbutt in one of the trees in pewter city (were brok is)
no
no
No
all of them