Openstack learning resources

Interested in learning more about openstack? following are some useful learning resources on openstack.
Thank you, Tyler Britten for sharing this information.

DevStack:
http://docs.openstack.org/developer/devstack/

Fuel with Virtualbox:
https://docs.mirantis.com/openstack/fuel/fuel-6.1/virtualbox.html

TryStack
http://trystack.org/

Join the Foundation:
https://www.openstack.org/join/register/?membership-type=foundation

Build your first OpenStack App:
https://www.openstack.org/summit/vancouver-2015/summit-videos/presentation/build-and-operate-your-first-openstack-application