Introduction to screen of Excel

Look at the picture below

in the picture there are different parts are highlighted and their name were also mentioned. Now look at the above screen which contains:-
1. Title Bar in the centre which contains the name of the file
2. In the left top corner Quick access bar is there which contains the commands you want to see for frequent use
3. Then there were tabs namely Home / Insert / page layout etc.
4. Each tab contains a group of commands as highlighted following with the group name in the bottom centre of group.