US Patent 9495559 Sharing user-generated notes

A method for sharing notes created in a multilayered document among users of a social network within a digital education platform is provided. In one embodiment, the digital education platform allows a user to create notes linked to a particular location in the document using a notepad application. Notes are aggregated and stored in the user's personal library on the digital education platform. When a user requests to share another user's notes and is granted access, the digital education platform retrieves the other user's notes and inserts the shared notes into the requesting user's existing notes associated with the document, based on their individual sharing attributes and metadata.