I read a ton of text explanations for about a year and didn't grasp everything about r-value references until I watch this excellent presentation by Scott Meyer : http://skillsmatter.com/podcast/home/move-semanticsperfect-forwarding-and-rvalue-references
He explain in a way that is funny and slow enough to understand each thing that happens in the processes.
I know, it 1h30 but really, it's the best explanation I've had in the last year.
After having read the articles (like the other answers), watching this video did melt it together in my mind in a consistent way and few days after I was able to explain it to some colleagues and explain how to use std::unique_ptr (as it is related - it only allow move semantics, not copy) because it requires understanding of std::move(), that requires understanding move semantics.
