Wondering where to turn to contact Microsoft Customer Support? See my post on where to turn to contact Microsoft Customer Support.
But if you're looking for support on Windows Phone, first visit the http://www.microsoft.com/windowsphone/en-us/howto/wp7/default.aspx, as I noted in my post with tips on moving from an iPhone to a new Windows Phone.
There's also the customer facing site on Microsoft Answers site for Windows Phone at http://answers.microsoft.com/phone/ where you can search, browse, and post questions and answers about Windows Phone.
These and several other options are noted on the Windows Phone Support page.
Added 12/17: There is also this review noted earlier, with great advice and prep details for your new phone: http://www.winsupersite.com/mobile/wp7.asp
Also available at http://bit.ly/eDpAz9