I can't tell you how many times I've searched for information about how to do something, only to find it AFTER spending hours doing it by trial-and-error. Hopefully, I can save you some time the next time you need to figure out how to do something in Team System. Recently, I found an awesome link to a series of "How Do I?" videos on MSDN that answer many of these questions, such as:
Here's the link: http://msdn.microsoft.com/en-us/vsts2008/bb507749.aspx
Here's an additional "How Do I?" series for Team Foundation. This one covers some basic stuff, like creating and managing work items, and creating reports, etc...