Learning LISP

I've been making my way through SICP, I've reached a point where I feel I have to start experimenting with a Lisp compiler. I'm on a Mac so I downloaded LispWorks, I'm too lazy to figure out how this IDE works.

Can someone point me in the direction of a simple command line compiler/interpreter that will work with the SICP?

Like >>2 said, LispWorks is for CL, and you want a Scheme.
I suggest MIT/GNU Scheme while reading SICP, then Racket or Chicken for actual coding. Racket is generally more noob-friendly.