Is it easy to move code from one Install of CI to another?

[eluser]Zurtri[/eluser]
My work is about to launch a mission critical system that has been coded in CI.

It will be my job to maintain the app once handover is completed.

Over the next few months I will need to learn CI.

Is it easy to transfer any code I create on my install to another install of CI?

Is it as simple as copying over the various MVC scripts?