Where do I find headbutt?

You find headbutt in Ilex Forest. You have to go past Celebi's shrine, and then take a by-passage and talk to the boy with green hair standing next to the tree. He'll give you Headbutt. Or you can get it at either Goldenrod City Dept. Store or Celadon Dept. Store... I forget which exactly.

Headbutt can be obtained from a kid in Ilex forest. After recieving it, you'll be able to buy it from the mart in Goldenrod City.

In Ilex Forest, a guy near a tree gives it to you. He's not on the main path so you have to go off the trail a bit.

You get it in the Ilex forest past the place where you cut the tree.

When you go to ilex forest search around and there should be a man and he will give you headbutt
Hope this helps :D

I looked in there and he just wanted to battle

Find I green guy in ilex forest and he will give you it

You can find headbutt by going in ilex forest after using cut

In Ilex forest there is an that gives it you if you talk to him go back to the beginning and follow the path and when it splits off after where you would have found Farfetch'd and it loops around to him he had green hair