What resource did you use to learn Janet? And did you already know lisp before? Comming from Python and php I found the "Janet for mortals" very difficult. It expected me to know what closures and macros are.

I'm not the one you asked, but maybe this is helpful:

I learnt Janet after learning Clojure, and it all felt very natural. So a possible approach is to grab a beginner Clojure book/tutorial first, run some of the examples, and then see how far you get with Janet.

Not everything is the same, but you'll find that out along the way, and the people in the Janet Zulip chat are always super helpful.

Also check out https://janetdocs.com for some examples.