Who would use this? Students
What is it? A shared document (or a folder full of documents!) in which all students of a class access and share their notes for class lectures, labs etc.
When would one use this? In lectures, labs, seminars etc.
Why should I use it? Why have everybody in class each take a different set of notes when you could ALL work one one shiny awesome set of notes?
How do I use it? Generally, if just one student creates a folder/document and shares the access link with all her/his peers, everyone will be able to get in and add notes/thoughts/links etc. Here’s a Google Drive Tutorial: