[rednab]

If you want to make a Lisp specifically, I'd suggest starting with MAL: https://github.com/kanaka/mal#mal---make-a-lisp

If you want to build a programming language in general, I strongly recommend https://craftinginterpreters.com/

[ericlewis]

Love crafting interpreters. I’ve used principles from this book even outside of programming language development. It’s wonderful.