Practical Common Lisp - entire text of the APress book; I bought one on paper, anyway, and I reccomend that you do, as well.
Paul Graham’s On Lisp - free as PDF, essays, links, & more.
Rainer Joswig’s annotated Lisp library
Nils Holm’s books - Scheme, Lisp, others.
Common Lisp: first contact - introduction, PDF of the book
Touretzky’s Common Lisp: A Gentle Introduction to Symbolic Computation -- nice book
The Little Lisper is available online, the original version
- it’s now known as The Little Schemer and has been expanded, and has sequels
- C2wiki on The Little Schemer
- Author Daniel P. Friedman academic home-page.
- The Little Schemer - partial online edition of the most recent version
- LTU: Little Lisper question brings on other reccomendations
SICP “in” other (programming) languages, ie, using other languages to think about the same concepts