I am sure that by this stage you will have investigated the Add an activity or resource link on a course page (remember that you will need to turn editing on to see this link):
If not, then click on one of these links now to display the Add an activity or resource popup dialog:
Resources and activities are the building blocks of Moodle courses. Before continuing, look at the variety of resource and activity plugins a plain vanilla Moodle install supports. See that an activity provides teaching interactions--this is Moodle ...