I find Lisp particularly powerful as well. We use Clojure on a daily basis, and the guide that helped us a lot in getting started was Brave Clojure -- https://www.braveclojure.com/ -- going through it was fun and didn't take long. In my experience though LLM tools don't have much difficulty writing Lisp any more than other languages. However, when they hallucinate it's pretty bad: either spitting something completely off-mark, or mixing up params (and other hard to detect details), so that might be the struggle you're wondering about.