Some of your teachers may be posting links to online lessons and video clips that require you to set up a free access account.
All you have to do is open your Glow launchpad and using App Library, search for West OS. When you see the tile, add it to your launchpad for use in the future.
Click on the tile and set up a free access account using your Glow email and this will allow you to access all the resources available in many different subjects.