Rods are a type of cell in the eye.
When you're first starting out, it's good to do everything exactly as told. PhotoReading is natural (well, as natural as reading), but it's not something that we've been explicitly trained in at all. The probing quesitons, previewing, mind-mapping, etc. all aid in the transition of information from the other-than-conscious mind to the conscious. Once the connection is firmer, you can skip some of the formalities. Even then, it can still help in understanding.
