An Organic Approach
These workshops will help you improve your storytelling skills. After doing them, you can also USE them to help and teach others (but please cite this site as your source).
These workshops work best if you have at least one partner; it is not very effective to merely think about them or do them hypothetically. Would a pianist succeed by only practicing a piece hypothetically? (The answer is 'no', by the way). You need to DO these, out loud and full of enthusiasm and energy!
An Organic Approach to Storytelling?
Storytelling Defaults: Things to Do Unless You Have a Good Reason Not To
The Storytelling Process
Storytelling Skills: The Basics (an overview)
Visualization: The Most Important Storytelling Skill
Story Bones: Story Structure
You Don't Know Jack: Building Storytelling Suspense Using Limits
Building Suspense in Storytelling
Being Creative with Language in Storytelling
Using Your BODY in Storytelling
Gestures with a Purpose in Storytelling
Weeping, Wailing and Gnashing of Teeth