Knockout is a popular open source JavaScript library supported by a vibrant community. The following is a list of some key resources to help you with your journey:
Knockout Home: Download the Knockout library and access document from Knockout home at http://knockoutjs.com/
Learn Knockout: Access a set of interactive tutorials to help you quickly get you up and running at http://learn.knockoutjs.com/
Stack Overflow: Access Stack Overflow questions and answer site for Knockout at http://stackoverflow.com/tags/knockout.js/
Knockout GitHub: Access to source code on GitHub at https://github.com/knockout/knockout
Google Group: Access Google group for Knockout at https://groups.google.com/forum/#!forum/knockoutjs