Yes, I understand, I would probably feel the same if I wanted to learn C++ all at once and for its own sake. Luckily, I have never had to do such a thing. Indeed, I may never learn C++ in its entirety, and I may even miss some "important" pieces, but I am OK with that. I am very comfortable using C++, and I still continue picking up pieces of wisdom here and there - as I go. My advice, learn by example, start with a small project and go from there.