Marshall Cline's C++ FAQ is really, really good, IMO. I had read it some years ago, I think both the online version and the book, even though I've not really worked on C++ in projects. It goes into good depth and detail, not only on C++ language features and points, but also a lot into OOP/OOAD topics. Things like why you should (sometimes) push code from the client to the server - push in the sense of shift, not in the sense of mobile code, how old code can call new code - that didn't exist when the old code was written - don't remember the full details of that one right now, it may be via virtual functions and inheritance), and many more such things, a lot of them very useful. And all written in a fun, engaging style.
