I would like to become a doctor but I don't know the steps on ding so. When applying to colleges which major am I suppose to write?

Hi there, here are some resources for you:
How To Become a Doctor | College Hunter Blog (http://www.collegehunterblog.com/professions/so-you-want-to-be-a-doctor)
How to Become a Doctor - "How To Cut Someone Open and Go Straight to Lunch..." (http://www.theapprenticedoctor.com/showadvice.php?article_id=3)
Medical School: Advice on Medical Careers and on becoming a Doctor for High School Students (http://www.bestpremed.com/hs.php)

Hope this helped..