I would like some help on this assignment :) it’s due today at mid night !!! I also have some questions about the assignment I sort of understand it but mostly not

Some questions I have are

-How do I complete this assignment
-What is a cover letter
-What’s does it contain
-How do I write a letter of intro-
-What’s a letter of intro -
-What’s does a letter of intro contain-
1What makes a letter of intro amazing-
What does it need to have-
Why is it important-
Do’s and Don’ts of a cover letter-