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?

>>2
You want Racket or MIT Scheme
Macro in LISP.

(defmacro aif (cond then else)
  `(let ((it ,cond))
     (if it ,then ,else)))

"Macro" in Scheme/Racket.

#lang racket
(require racket/stxparam)
 
(define-syntax-parameter it (lambda (stx) (raise-syntax-error 'anaphora "missed context" stx)))
 
(define-syntax-rule (aif cond then else)
  (let ([temp cond])
    (syntax-parameterize ([it (make-rename-transformer #`temp)])
                         (if temp then else))))

>>3
Racket or Chicken for actual coding
Nobody does "actual coding" in Scheme. It's a useless academic language, like Haskell. Real lispers code in CL, Clojure and Arc, never scheme.