Is the a user's manual for the SAM software. I'm very interested in using it in our projects, but need to learn more about the components

The best source of information about SAM is its help system, which you can access from SAM, or from the 
    Learning page of the SAM website
: 
    Help System as Web Document
. You can also download a PDF version of the Help system from the Learning page, although it is a very large document.

You can also find documents describing the various 
    performance models
 and 
    financial models
 in SAM by following the links on the website Resources menu.

Best regards,
Paul.