Hi Envenger,
UE4 actually uses quite a lot of C++11 features! Things like auto, the new for loop, lambada’s are all quite useful in UE4.
Visual studio doesn’t support all C++11 features yet (for example constexr is sadly missing) but 2015 will support most of them.
I have this book myself and it’s very useful as a reference and technical guide. It’s not really a style guide or even a best practices guide. Stroustrup does put a lot of recommendations as far as these things go in there but it’s only his option on things, which obviously is worth more than most peoples! But his way of doing thing certainly isn’t the only way.
I would highly recommend it as a technical language guide if that’s what you’re looking for.