These materials are being published as part of a new approach to scholarly publishing. The manuscripts and videos are freely available from this Internet-First University Press repository within DSpace at Cornell University.
These online materials are available on an open access basis, without fees or restrictions on personal use. All mass reproduction, even for educational or not-for-profit use, requires permission and license.
The open access movement:
Putting peer-reviewed scientific and scholarly literature
on the internet. Making it available free of charge and
free of most copyright and licensing restrictions.
Removing the barriers to serious research.
I recommend the OA tracking project (OATP) as the best way to stay on top of new OA developments. You can read the OATP feed on a blog-like web page or subscribe to it by RSS, email, or Twitter. You can also help build the feed by tagging new developments you encounter.