I translated a tutorial I made some months ago and updated it for Blender 2.46. Here is the introduction:
For this tutorial you need to know the basics of Blender, but no background knowledge about softbody is needed. This tutorial doesn’t aim to explain everything about softbodies in Blender. It just shows the basics of it in a different way and in a very bad english.
In this tutorial, we’ll talk about using Blender’s Softbodies to model coupolas, archs and much more. Yes indeed it is something more about fun and experiment than efficiency, but this technique has already been used long time ago (and without Blender !).
It is here: http://matthieu3d.free.fr/TutSoftBodyEng.html
If some parts are difficult to understand or mistaken, please let me know.