You came to the right place (Moodle forums) for assistance. The image that you provided was a screenshot of Moodle's front page. This is the page that displays the listing of all of the courses and course categories in the site. So, in your case, it appears as though you have three course categories (Miscellaneous, Week 4, and Week 5). Most schools create categories based off of focus areas (English, Science, Math), or even based on individual teachers (Mr. Smith, Mrs. Jones, etc..)
At the top of your screenshot it says "no courses in this category" and then directly below it is "Add a new course." You would first need to create a course, then enter it, and then turn your editing on in order to begin adding activities/resources.
Take a look at this youtube video that walks through the steps on creating a course.