if you are totally unware of git...

I wouldn't say totally unaware...
A little over 20 years ago I did a contract at IBM mainly with Oracle 8. I ended up doing quite a bit of coding. This was the only time I have ever been paid directly to write code...Perl of course...
We used a CVS so I am familiar with the principle but I cannot remember anything especially useful about it.

Thanks for the link - I shall work through that tutorial this week before I start properly back to work next week after the festive break.