I'm a new student as well as of March 2020. Read the instructions very carefully in the Course Guidelines book that comes in the "box of goodies"/ materials for the course. I had to read them three times. Not that they are difficult to understand but because I want to understand. Best of success to you.
At the top of your course page you will see a box that says Assignments Unit A. Click in that box to upload documents etc. Good luck to you! I am new as well!