Touch Typing Fingers Motion
Don't look at the keys when you type. Just slide your fingers around until they find the home row marking.
Limit your hand and finger movement only to what is necessary to press a specific key. Keep your hands and fingers close to the base position. This improves typing speed and reduces stress on the hands.
Pay attention to ring fingers and little fingers, since they are considerably underdeveloped.
Practice regularly and your fingers will learn their location on the keyboard through muscle memory. Also, you should learn the Posture for sitting on computer.