Can't really top Gails advice, but I'll add my 2 cents. The 2012 exams are still fairly new and the Training materials are still just coming out. There's only one MS Press training kits for the first 3 exams out right now. One was supposed to be out yesterday but it's still unavailable from amazon(I just checked 5 minutes ago). The study guide on the MS Learning sites are pretty thourough but I find them hard to study from. And as much I love BOL, it's not a very portable read.

I'm not sure about the availabilty of the Courses for 2012. They're out of my price range.