I'm curious as to whether or not there is an offline mode, or a good way to share content while unconnected that would still keep the content relatively protected. Or at least some suggestions to point the way.
If you want students to be able to view your content offline, then you are able to make most content types (e.g. video, audio, PDFs) downloadable.
The best way to protect that content from unauthorised sharing is to add a watermark/copyright line to your videos and PDFs. For audio, you can add in a line about you and your business/website.
Hope that helps!