A less technical method of doing file sharing for your group instead of using SVN is to use the website: http://www.getdropbox.com/home (Dropbox). I am part of an on campus organization whose officers use this method of sharing files.
It is easy and free, and you can share up to 2 GB of files. Just go to the website and read up on how to use it; this is file sharing for newbies.