How I Use It
I use it personally for my own files as a backup tool but also at the same time for sending links to my students using the "Get public link" feature for each file.
This is a great app for sharing resources such as documents, PDFs, movies, and pictures. It is however a bit technical so you might want to use this only for older students.
For younger, less technical audiences, you can either use this seamlessly with devices that you control (e.g. computer lab) or just use it for sharing publicly-available files to your students.