[Radiant] How to use an alternative external (file-based) stylesheet?

[Andreas Semt]

Hello list,

again some (three) newbie questions:
1.)
What steps are necessary to create an alternative CSS style sheet in an 
external file?
2.)
Also: How does the (Pages->) Styles page and the (Layouts->) Stylesheet 
layout interact? I know that (Layout->) Normal uses /styles.css as
style sheet definition.
3.)
Is it right that the (Layout->) Normal layout assembles the whole page 
from the defined parts (or children of (Pages->) Home Page)?

Many thanks for any help!


Best regards,
Andreas Semt