Hi,
I am happy you are asking material to prepare the examination. I am suggesting you have to give some amount of man hours for preparing the exam, but sometimes it will not work less amount of time for preparing the exam.
you can learn Exam Ref 70-486: Developing ASP.NET MVC 4 Web Applications from this url
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Developing ASP.NET MVC 4 Web Applications]
I am recommending you before attending the final exam, you have to some practice with the free online test.
For 70-486 practice test from this link
Developing ASP.NET MVC Web Applications[
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