Just to muddy the waters a bit:

You might want to look at Github. Integrates with VS well but can be better if you are collaborating with non-MS shops...

>I don't have the MSDN subscription but what William said, I will go with the Express version. I only need it for 2 people; maybe 3 at the most. Actually I have already started watching the tutorial on TFS on Pluralsight.
>Thank you and thank you, William.
>
>>If you have an MSDN subscription, you have a TFS license. TFS Express *may* be free. I'm not sure about that. As usual, the MSDN site is difficult to find anything on this.
>>