this one is pretty awesome http://www.cs.indiana.edu/~dyb/pubs/3imp.pdf http://www.cs.indiana.edu/~dyb/pubs/3imp.pdf also, the principals of ai programming lis

this one is pretty awesome http://www.cs.indiana.edu/~dyb/pubs/3imp.pdf http://www.cs.indiana.edu/~dyb/pubs/3imp.pdf also, the principals of ai programming lisp book walks through implementing a scheme interpreter as well as a compiler in lisp. (it's tougher than it appears, for one thing lisp doesn't require tail call optimization, so you need to manage the stack explicitly.) check out sicp chapter 5, online! http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-30.html#%_chap_5 http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-30.html... scheme is fun. edit I've heard great things about lisp in small pieces, but i haven't read it myself.