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.
The kind of mayflies and stoneflies that are seen in streams are nymphs, immature forms without wings. These insects only have an incomplete metamorphosis, unlike caddisflies and true flies. Whenever we say mayfly or stonefly, we will be referring to the immature nymphs. Mayflies and stoneflies look much alike.