Application structure

[Walter C. Reel III]

I'm trying to learn Erlang and create a 'Proof of Concept' system at the same 
time. I came across the Application structure in the 'Design Principles' 
documentation.  Would it be better to start from this structure and work 
upwards?  It would seem there is a lot of built in functionality that relates 
to the application structure.

If so, does a node correspond to an application?  The mnesia schema would go 
under 'App/priv' or 'App/priv/schema', right?

Thanks,
 - Walt