I taught my first official lesson at the age of 12. My student was not much younger, but his mom still remembers the lessons fondly. She recently reminded me when she came up to the green room after a recent concert. Most musicians have an inherent need to pass on their experience and knowledge, especially when, in my case, I was lucky enough to work with Leonard Bernstein among others. The link below will take you to my teaching site which has many resources for students and browsers alike.