Please don't take offence but given the other concepts you
are trying to get to grips with, you have your work cut out without
getting into source control.
I would figure out the basics first and come back to this
later.
To provide yourself with backups, zip up your work daily and
put that on your network.
Take a look at this article later.
http://www.adobe.com/devnet/robohelp/articles/robosource.html
You will need assistance from your developers. I don't mean
you in particular, I mean most people setting up source control
would need that.
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