The peaceful parenting institute is an organizing founded in New Zealand by husband and wife team Genevieve and Dan Simperingham in 2004. The goal of the PPI is to:
equip parents with the tools to transition to a non-punitive connection and attachment based parenting or teaching approach
They offer a large number of resource articles for free on their site, as well as an actively updated Facebook Page:
Facebook https://www.facebook.com/TheWayOfThePeacefulParent
The also offer paid memberships to their private community and a-la-carte e-courses.