Not free but probably the best c++11 reference available.
http://www.amazon.co...&keywords=c 11
The first couple chapters are just showing you the big new features. The rest of the book continues showing how to use c++11 including the smaller new features. This is what you want I think.
And yes VS2012 is really good IDE for c++, far better than vs2010. However there are some other free IDE's that are just as good like, QTCreator and Eclipse, QTCreator being the easiest to setup, learn, and get running. Eclipse being the opposite harder to setup and learn but more features than QTCreator or VS2012, ( has a side effect of being hard to learn ) .
So I would suggest VS2012 for windows only projects and QTCreator for cross platform. Both support c++11 compilers (microsoft's and GNU). But neither compiler is completely c++11 standard compliant. It will will be some time until compiler support catches up. However both compilers support the "Big" new features such as memory classes, for each loop, nullptr, ect....