If you don't have any modules, you'll need to create one by clicking the button in the top right corner +Module, giving it a name, and clicking Add Module.
To add an item, click + [1], or drag and drop to add files to an empty module [2].
After clicking +, a window will pop up and show a drop down menu where you can choose the type of item you wish to add. You can select from:
Assignment (includes quizzes created using the New Quiz tool)
If you want to add a new item, click the [New] link [1] and type a name in the name field [2]. Depending on the item type, when adding new content you may be asked to complete additional fields.
If you are adding a file to a module, you can upload a new file by clicking the New File(s) link [1]. Uploaded files are automatically published and also display in Course Files.
To select a file from your computer, click the Choose File(s) button [2].
To select a destination folder for your uploaded file, select an option in the Folder drop-down menu [3].
If an uploaded file is a duplicate of an existing file, Canvas displays a prompt asking if the file should be overwritten, renamed, or skipped.
If you have already created the item you want to add, click the name of the item. You can select more than one item to add.
To change the indentation of the item inside the module, choose the Indentation drop-down menu.