We have a stickie on top of a lot of the forums with good websites/books, etc. I figured I'd share one I just discovered. I decided to test my C++ knowledge and so I took this quiz and didn't do too hot. But I don't feel too bad and if you take the quiz and look at the answers , I imagine you won't either when you fail. I think it's like golf. The lower your score, the better your actual knowledge.
Anyway, we have a prominent thread for good sources, but I thought it would be interesting to share BAD ones to never refer anyone to, so I'll start with the one above, assuming the rest of it is anything like the quiz I took.