If you like playing around with computer graphics, you'll probably love Second Life, Bee. You can build pretty much anything you want there, and you (or your avatar) can interact with what you build as if it were three dimensional. Definitely let me know if you get in there. I can show you some good places where you can practice building. I can't give you any tips on building, though. I have not tried to master that skill, although I enjoy watching other people build stuff.