Need to learn ASP.NET with Visual Basic as fast as possible.

I recently got a job with a web design company as a back-end developer. The company uses ASP.NET and Visual Basic to design all of their back-end solutions; unfortunately, nearly all of my experience is in PHP. What are some good sources (websites, books, etc.) that can help me learn how to implement back-end solutions in ASP.NET w/ Visual Basic? They are giving me 30-days to learn the language and become an effective programmer.