I came across a book about growing Moss. It is in PDF form. It is called :

"Moss grower's handbook : an illustrated beginners' guide to finding, naming and growing over 100 common British species"

http://rbg-web2.rbge.org.uk/bbs/Resources/Fletcher.pdf

It is a sub-link of the ROYAL BOTANIC GARDEN EDINBURGH website (http://www.rbge.org.uk/).

Hope this helps someone.

-STERLING

P.S. Download PDF file. It is an old link and might not be supported much longer.

Here is a link that might be useful: Moss Grower's Handbook