[tmtvl]

If you're ever bored for a weekend I'd recommend reading through the Reasoned Schemer, or at least the final chapter and the appendices to see how a simple Kanren can be implemented. It's what got me to properly appreciate macros.

[sitkack]

I think the best way to learn Lisp is to make a Lisp.

Two routes, I would recommend both.

https://github.com/kanaka/mal

https://t3x.org/