Useful Common Lisp resources

There are many more excellent resources, most of them cross linked in one of the learning section.

Important resources

• The Common Lisp HyperSpec, by X3J13 committee. The Common Lisp Standard
• Common-Lisp.net, project hosting and gateway
• The Common Lisp Wiki

Books

There are many other great books you can find links to. These are the most popularly linked introductory works.

• Practical Common Lisp, by Peter Seibel (free on web)
• Land of Lisp, by Conrad Barski
• Common Lisp: A Gentle Introduction to Symbolic Computation (PDF), by David S. Touretzky (free pdf)
• Common Lisp: An Interactive Approach (PDF), by Stuart C. Shapiro
• Successful Lisp: How to Understand and Use Common Lisp, by David B. Lamkins

Following these are two more advanced books, but beginners shouldn't be afraid of them, they're quite accessible and "classics".

• On Lisp, by Paul Graham (free pdf)
• Structure and Interpretation of Computer Programs, by Abelson, Sussman, and Sussman (free on web)

The last is actually on a related Lisp dialect, Scheme, but it's very helpful book, generally. If you find you prefer Scheme, it's an excellent start.

Quick reference

Quick-guides / cheat sheets for Common Lisp:

• The Common Lisp Cookbook by various contributors, includes quick help on often used commands or features.
• Common Lisp Quick Reference is a print-it-yourself booklet for having a quick reference handy.
• Simplified Common Lisp Reference gives a quick glance at often used commands, ideal for newcomers.