Check out these video and audio resources to help with stammering.
For parents
Has your pre-school child started stammering?
Should I be worried?
Is it my fault?
How to help pt 1: What you're trying to achieve
How to help pt 2: Talking to a child who stammers
7 tips for talking with a child who stammers
The video below was made by the Stuttering Foundation and features leading therapists who work with children who stammer:
For people who stammer
Audio
Slow Prolonged Speech: An audio file and accompanying leaflet helping you to learn this fluency shaping technique. Produced by the BSA in the early 1990s.
Neuro-linguistic Programming (NLP) exercise for people who stammer: An audio file from Bob Bodenhamer, co-founder of the Society for Neuro Semantics.