How do I add a file to my course?
To add a file to your course, make sure you are in the course you wish to add the file to.
Note: Video and audio uploads to Canvas through the media tool can be up to 500 MB in size.
Click the Add Files link to upload files.
Adding Files in Firefox & Chrome
Some web browsers (Firefox and Chrome) contain a unique feature which allows the user to add to files by simply dragging and dropping the files from a file window directly into the Canvas file repository. Click the title of the file you wish to add  and drag the file to your open browser . Your file will automatically upload.