You have 2 options, you either use it inside
testcomplete with microsft TFS or something simmilar
or outside (we use
tortoiseSVN) .
For a begginer, tortoise is really simple, you just need to set up a SVN server in your network, create a repository for your files, and start commiting and updating your files.
There are a lot of similar tools, the best one must be GIT, but is not as simple as tortoise to get started.
If you have microsoft TFS licenses I think is your best option, there's a million things you can do with it (or so I've heard), but I've never used it.
anything else, feel free to ask.