Scripts won't save

I'm new to Shake and can't seem to save the scripts I'm creating. The book I'm learning from (Marco Paolini tutorial (Shake 4 - Apple pro training series) told me to create a folder in my home directory which it wouldn't do (SAVE SCRIPT ERROR) until I pulled up $Home which is listed as a favorite (I never set up a directory named $Home) in the /home/ directory where it seems to save. But when I try to bring it back up later only one node shows up and it's colored yellow, and clicking near it in the node viewer turns it red.

Thanks,
Brian