umbrellas & softboxes

I know that using umbrellas and softboxes is to difuse direct light from your subject. But do you use each differently?
I would love to learn more about each type and how they are used. If someone could direct me to web sites that deal with this kinds of things would be most helpful.

Newbie here
rovowen

Here is one good start for ya:

PhotographyReview Webschool

Thank you, I will go and look at this page

Newbie here
rovowen