Once you have a good handle on the Home keys, you can start expanding to the other keys on the keyboard. Use the same repetition exercises to memorize the locations of the other keys. Use the nearest finger to reach the key. If you are keeping your wrists elevated, you will be able to easily strike the keys that are slightly outside of your reach. 6
Image credit Life Cycle of Aquatic Insects, USEPA. Gilbert Rowley illustrates the mayfly life cycle from the egg to the nymph and through the various adult stages (emerger, dun and spinner) that are of interest to flyfishers.
Mayfly Life Stages. Mayflies spend the majority of their lives as nymphs on the stream bottom. When the time is right (depending on the species), they emerge with members of the same species into the adult dun stage. A short time later they molt into the sexually mature spinners.