While not specifically designed for foster/adoptive parents, The ACEs Coalition of Guelph & Wellington has a series of 5 online, self-directed modules available for free that address many of the issues you highlighted in your question. The five modules include:
- An introduction to Adverse Childhood Experiences
- The Impact of ACES
- Resilience
- Taking Action to Prevent and Reduce the Effects of ACEs and Build Resilience
- ACEs and Resilience Practice Case
Register here - https://acescoalition.ca/get-trained/