First of all, I know this site is for RBLX Lua/Lua in general. Are there any sites like this for C++? I know there's http://stackoverflow.com/, but all the questions I've seen on there seem advanced and intimidating, contrary to this site's questions. I don't know if I should be asking any beginner-level stuff on there.
Second, the one thing I'm curious about in C++ at the moment is the libraries. I know the first one they teach you is iostream. Where do people learn about the others? Are they just common knowledge? Is there a reference for them?