How do i tune a bike gear derailleur?

Question

mine will not work rite and i would like you to give spacific instructions. the person that tells me how and it works will get best answer

Answer 1

You can tune a derailleur but you can't tuna fish.

Go to http://parktool.com for detailed instructions.

Answer 2

This web sight is the best for that kind of information as it is very complicated to explain.  http://www.parktool.com/repair/index.asp

Answer 3

Kipper's right.

If that doesn't work, google.