There are a number of ways to get involved in OpenPOWER Foundation.
Become a member and show your support participating in development and related activities. Depending upon your membership level, you can engage in work group activities, approve technical work product, work on various marketing initiatives, and more. See the Membership Levels page and Bylaws for OpenPOWER member level descriptors.
Or you can join the Open Developers Program for access to resources.