I'll second PCL. It really is incredibly good. Unlike some other introductions to Lisp, which tend to be of the algorithmic, CS side of things, PCL approaches things from more of a scripting/software-development side.
Common Lisp really is a great developer's language, and PCL helps show why. Peter Seibel's a great writer, too.
Common Lisp really is a great developer's language, and PCL helps show why. Peter Seibel's a great writer, too.