Ah, that's understandable. In fact, another good resource to check out is this video from James Rolfe as the Angry Video Game Nerd. It shows R.O.B., Gyromite, and Stack-Up, so this should help you visualize how it all comes together:
At around the 1:45 mark, Rolfe starts to give a great demonstration of what R.O.B. can do. Sure, he pokes fun at the robot along the way, but he's still quite informative.
Be sure to let me know if you'd like any more clarification or advice.