Ansi Common Lisp

ANSI Common Lisp by PaulGraham

Paul Graham's web site at http://www.paulgraham.com/acl.html includes code samples.

Broad description of the CommonLisp language. Some overlap with (but newer than) the author's earlier and more advanced book, OnLisp. Many examples. Unusually well-written and enjoyable. The first two chapters are available at http://www.paulgraham.com/articles.html in plain text form. Chris Riesbeck of Northwestern University has excellent annotations to the text on his Intro to AI Programming course site: http://www.cs.northwestern.edu/academics/courses/325/readings/graham/graham-notes.html