If you use any sort of source control system you will find this TFS Branching Guide available at http://www.codeplex.com/TFSBranchingGuideII useful.  There is some Team Foundation Server specific content and labs but the main branching guide is source...

Here are some steps you may want to take to around planning downtime for your Team Foundation Server h/w. Proxy – can be rebooted at any time.  Users will pass through to the App Tier as long as the proxy is offline. Build – Mark the build agents...