The Peeragogy project was convened by Howard Rheingold in 2012 (https://clalliance.org/blog/toward-peeragogy/). Here is a video in which Howard describes how he went from organising co-teaching in his classes at Berkeley and Stanford, to running collaborative courses online, to convening a group of people to collect practical know-how about how to learn any subject without teachers: https://youtu.be/dHvGIX2Wjss?t=138
The Peeragogy Handbook is the “the no-longer-missing guide to peer learning & peer production.” We decided to early on to publish our book directly in to the public domain, via the CC Zero waiver, so that we could minimise friction for people adopting and adapting the contents (http://www.peeragogy.org/license). We are currently working on the 4th Edition of the book, which will bring a lot of changes to the contents (the 3rd Edition was published in 2016).