Great Video for teens and adults who stutter
This video by The Stuttering Foundation of America is great for answering many questions about stuttering. One good point is that speech therapy works for teens and adults; it is never too late to get help. Go here to view If You Stutter: Advice for Adults http://www.stutteringhelp.org/default.aspx?tabindex=604&tabid=617. It gives some pointers for self therapy for stuttering.