I also wrote my first impressions on Devin, more focused on the user experience and analysis of its capabilities (with lots of screenshots):
https://thegroundtruth.substack.com/p/devin-first-impression...
https://thegroundtruth.substack.com/p/devin-first-impression...
Also I've been prompting ChatGPT and Claude for over a year, that might help with communicating with Devin.