If you want to learn languages, implementing a lisp interpreter is a great exercise, and lots of fun too. Every time I come across a new language I want to give a try, creating a lisp interpreter is one of the first things I do.

If you're curious but want a more language-agnostic guide, mal (Make a lisp) is a language+project that has a guide you can follow along with basically any language, and if you get stuck, you can look at already implemented versions in practically any language: https://github.com/kanaka/mal

Personal favorite implementations of mal: nasm (assembly) (https://github.com/kanaka/mal/tree/master/impls/nasm) and wasm (https://github.com/kanaka/mal/tree/master/impls/wasm)

mal has also been discussed many times on HN (which is probably how I came across it the first time too) for close to a decade by now: https://hn.algolia.com/?query=kanaka%2Fmal

I had fun making an interpreter in ARM assembly:

https://github.com/marcpaq/arpilisp

Since the world obviously needs another book on Lisp-making, I'm thinking of porting it to arm64 and expanding it into a book.