How to fill a form in a website | How to go one portion to other

How to filling the form in a website | how to go to one portion to other 

For example you are signing up for Facebook 

First you have to write your name then surname then email or phone then password ......etc.

First write your name then use the Tab button on your keyboard to go forward  or go next .

And if you make a mistake you think you have to go back then you press  Shift + Tab on your keyboard to go back.