Online Microsoft certified courses on all Microsoft products that will help prepare the learner for Microsoft Certification.
http://www.microsoft.com/learning/default.aspx
100s of online and CD courses available for $25 each that include applications by Microsoft, Adobe, and others, including Microsoft Office, Photoshop, Illustrator, InDesign, Open Office, Dreamweaver,
http://www.lynda.com/
Free online training for Microsoft Office 2003 and 2007, including Word, Excel, PowerPoint and Publisher.
http://office.microsoft.com/en-us/training/default.aspx
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https://www.google.com/mail
https://login.yahoo.com/config/mail?.intl=us
http://docs.google.com/
http://technorati.com/
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http://office.microsoft.com/