I recently bought a dead tree copy of Norvig's Book PAIP, and plan to dig harder on common lisp environment.
To set up a correct environment, there's emacs,slime and an implementation of common lisp. sbcl is my choice, for no big reason. It's just one of the free implementations.
Slime configurations are endless, but here's a decent one that mostly works for me.
Ah, there's a surprise in the book. I'll show you in a future post :)