C++ is one of the most popular programming language for graphical applications, such as those that run in Windows and Macintosh-environments. I heard it is mainly used for computer programming, but find out for yourself by these two links:
The first link is a link to a super resourceful website that you can learn C++ anytime you like.
The second link is for an amazing book that paces you (in a good way) to learn C++ as fast as possible.