I am working on what I thought would be a simple animation of a 3 x 3 grid appearing rod by rod. The first frame would just have an empty background and then add one vertical rod, then the next, then the next. After the three vertical rods, the next horizontal rod, the next and finally the sixth rod. I thought that I could just start with no rods in the first frame, add a rod in say the fifth frame and set it as a keyframe, then every fifth frame add a new rod in a new keyframe. But what happens is that once I add each new rod it appears from the first frame onward. What am I missing?

The Bryce documentation does not do a very good job describing how to use the tools to do an actual animation. They just describe what each tool does and leave you, the reader, to figure it out. Is there somewhere I can get some good tutorials on actually doing rudimentary animations such as the one that I am attempting to do?