middle on keyboard. and used to typing the words.
shift key is used with the other keys for different purpose.
if you press and hold the shift key along with a letter key, it will type that letter in capital even when the caps lock is turned off.
+ a gives a (when the caps lock is off).
+ a gives a (when the caps lock is on).
there are some keys on the keyboard which have two symbols or a number and symbols or a number and a symbol on it.
to type the upper symbol on you need to press and hold the shift key along with the symbol key.
you can press the tab 