While doing my masters I used e-books for the books required that were offered through the library. Through that experience I would say that being able to tag pages and make notes in the margins will be key to this concept being a success.
If you were wanting to find someone to follow on Twitter related to a particular education topic, start here, select a subject, and see who you might follow.
The Printliminator is a bookmarklet with some simple tools you can use to makes websites print better. One click to activate, and then click to remove elements from the page, Alt click to keep that area only.
Save your ideas, things you like, things you hear, and things you see. Evernote works with nearly every computer, phone and mobile device out there. Search by keyword, tag or even printed and handwritten text inside images.