Casio CZ/ VZ/ FZ - Pro Series

Hello all,

New member here.  Does anyone know the history of the CZ5000, such as 
when it first came out? or How many versions of it are there?  I have 
one that was purchased in 1984 new and has had very very little use.  

I would like to use it it to learn keyboard and was wondering if 
anyone can recommend tutoring software and any connectivity hardware 
(for my PC) that I would need to use this to teach me.  Hopefully this 
unit is not too old.

Thanks for your help,

Ken