Just read On Lisp and find a primer on Scheme macros. Then if you're still interested read Let Over Lambda. Few languages do macros like lisp, so it's worth l

Just read On Lisp and find a primer on Scheme macros. Then if you're still interested read Let Over Lambda. Few languages do macros like lisp, so it's worth looking at the macros to understand a new concept. Besides that, though, I don't think lisp has anything world shaking. Also if you happen to like what you see in macros, try also checking out parsing words from forth or factor.