We've launched the SoCal Team System Community site (http://www.SoCalTeamSystem.com/). Our goal is to provide a more centralized area for Team System-related information that's specific to Southern California.
In the interest of time, the initial site leverages Office Live Beta (http://officelive.microsoft.com/). We are planning to create a custom site to eventually replace it (with much more content, discussion forums, etc); but for now, you can still find general Team System information, SoCal events, and information about MS office locations.
The Team Foundation Server bits which you can download from MSDN (find it here) represent the full product - complete functionality and connectivity. The only difference is that there is a evaluation time limit of 180-days. Once you obtain your product key, you can simply enter your product key and remove the time limit.