To Add A Module.
First make sure you are on the home page of your course by clicking Course Home on the left hand course navigator.
Click the Add Course Module button on the top left hand of the page.
You will now be in the Add Module page. You can search for the Module name, browse by category or scroll the modules shown in the list on the right of the page
Once you find the desired module click the Add button to add it to the home page.
Click OK on the bottom of the page to navigate back to the course home page or select Course Home on the bread crumb trail.
The module will now be part of your home page. To re-arrange the modules hover over the module and click the four directional arrow to drag and drop.