Once you have entered your library items, you can now upload them into your course checksheet.
Go to courses.
Click show checksheets.
3. Click edit.
4. Click the pen to open the section you want to add items to.
5. Add a new step. Either of the below green buttons will work.
6. Click learn.
7. Click existing reference.
8. Fill out Create a new existing reference step.
9. Repeat the above steps to continue adding existing library items to your course checksheet.