Here are a few more great resources from my notes (including one from Lilian Weng who leads Applied Research at OpenAI):
- https://lilianweng.github.io/posts/2023-03-15-prompt-enginee...
- https://www.promptingguide.ai (check the "Techniques" section for several research-vetted approaches)
- https://learnprompting.org/docs/intro