Newbie Help for multiple signatures

Hello
 Can someone give me an example of using a different signature file 
based on the send to address ? I have only 1 email address but would 
prefer a different signature for a certain address I send to.

 Also I am baffled on how to add a mailing list. Could someone give me a 
good example ? 

I do not have internet access. My email service is a 3rd party private 
APN. So please exclude links in your answers. If this topic has been 
covered already, sorry for the bother. 

PS My first post here. I am better at fixing engines, etc than tweaking 
Mutt :)
-- 
MN Repair