You may not be able to see your notebooks for the first time viewing them, and its an easy fix to get it working!
To fix it, go to your office 365 homepage. You can access this from the BHS Website.
Then go to the 'Teams' section.
While in teams, go to your respective class.
Under the class, there should be a sub-section called 'General'.
From there, you should see a tab called 'Class Notebook'.
Click on the Class Notebook and press on a section you would like to go to.
(I suggest collaboration space)
From there, you can click 'edit in One Note', choose 'OneNote'.
I also made a video describing the process if the written how-to guide doesn't work for you.