This project (not a MOOC, not a webinar, something else...) seems to be worth a look. It's "a 3 week effort to coordinate as many people as we can to read (Douglas) Engelbart’s 1962 paper with each other, and use Hypothes.is to annotate, augment, discuss and add meaning to three main sections identified by Gardner (Campbell)." You can prepare by reading Englebart's paper on its own. You can practice by using hypothes.is to annotate this post (how's that for recursive?).