Which are good books to learn WP7 programming?

Can u please recommend some good books (pdfs) and sites where i could get information on Windows Phone Seven programming.I would also like to know more on Expression Blend also.

Solution

You can find everything here :)

http://blogs.msdn.com/b/microsoft_press/archive/2010/10/28/free-ebook-programming-windows-phone-7-by-charles-petzold.aspx

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