Of course it is possible. I've been thinking about making a command-line (text) based RPG with C++. What you could do is say, create some bad guys, create a menu of what the user can do to them, randomize some attacks and etc... It will take a lot of function work but yes it could be done. I don't know of any good sites that provide basic game info. But there are lots of OpenGL sites and advanced sites. But you won't make a 3D game by this summer so I'd stick with command line stuff.