The greatest feature of Lisp is that everything is an expression. Almost everything else is secondary as it’s already present in other modern languages. If you

The greatest feature of Lisp is that everything is an expression. Almost everything else is secondary as it’s already present in other modern languages. If you ever encountered a syntactic limitation in any language, you could go to Lisp and work your way around it either with macros or even simple control flow. I would recommend to skim through Peter Norvig’s PAIP to get a taste of it. Then, as another user suggested, writing your own pattern matching library would be a great exercise.