Hello there. Welcome to the DarkBASIC community! I like that you want to start 3D, but don't start too big. Many people make the mistake of trying to make a game they don't have the experience to create. Don't worry, it is definetely possible to create virtually anything in DBPro, but it takes time and experience. Try starting small, say maybe a few lengthy text games. From there you can move on to 2D or 3D(your choice) and gradually progress from that point. I havn't been coding very long, but I have just started my first major game project, which is like a combination of Marble Insanity and a maze game.
Once again, welcome, and happy programming!
D