Here’s a nice collection of webcasts on Windows 7 that you should find helpful.

Windows 7: A First Look for IT Pros

http://technet.microsoft.com/en-us/library/dd266801.aspx

TechNet - Windows 7: Troubleshooting and Support

http://technet.microsoft.com/en-us/library/dd349347(WS.10).aspx

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TechNet Video: Troubleshooting Windows 7 (Level 200)

http://www.microsoft.com/events/series/technetwindows7.aspx?tab=Videos&seriesid=141&webcastid=6784

TechNet Webcast: Windows 7 Feature Overview (Level 200)

http://www.microsoft.com/events/series/technetwindows7.aspx?tab=Webcasts&seriesid=141&webcastid=6496

TechNet Webcast: A Tour of Windows 7 (Level 100)

http://www.microsoft.com/events/series/technetwindows7.aspx?tab=Webcasts&seriesid=141&webcastid=6369

TechNet Webcast: Windows 7 Enhanced Security and Control (Level 300)

http://www.microsoft.com/events/series/technetwindows7.aspx?tab=Webcasts&seriesid=141&webcastid=6503

Several other Windows 7 webcasts

http://www.microsoft.com/events/series/technetwindows7.aspx?tab=webcasts&id=odall