Click the Manage button of your desired course and then click the Instructor Tools button of your desired section.
Click the Resources tab and click the Choose Files button and select the desired file. Your resource will be uploaded.
Now, if you want to edit the resource uploaded by you, click the settings menu next to the uploaded resource and select the Edit Resource option. Enter the desired title and required description for your resource. Finally, click the Save button to freeze your preferences.
To delete the resource uploaded by you, select the Delete Resource option from the settings menu and click the OK button.