Hi Arthur,
As Raymo has said, settings will depend on what you are intending to shoot.
A good start would be to read the following page:
http://www.astropix.com/HTML/I_ASTROP/CAMERAS.HTM
Also, here is the
table of contents for the rest of that site,
LOTS of goodies for the beginners!
For example:
Focusing,
Settings,
A simple Tracker for when you are ready to advance a little and increase exposure lengths.
Enjoy looking around
PS:
If you choose to make a simple Barn-door tracker, send me a message and I'll let you know of a very,
very simple modification I came up with(strangely, I've never seen it ever mentioned elsewhere on the internet) that will allow you to double the exposure time.