Effective Modern C++ by Scott Meyers is a good book that I've been supplementing with google searches. It goes over the main new features in '11 and '14 you would want to know.
(disclaimer: I am an unattributed - due to company policy - interviewee for Meyers Effective Modern C++)
edit: grammar
I've always liked C++, but I think it's become a much more enjoyable language to use in the last decade.
Oh, while you're at it, check out the Passkey pattern[0], which is a nice way to avoid overuse of friend classes.
[0] https://stackoverflow.com/questions/3324248/how-to-name-this...