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Practical Common Lisp
Lisp is often thought of as an academic language, but it need not be. This is the first book that introduces Lisp as a language for the real world.
Practical Common Lisp presents a thorough introduction to Common Lisp, providing you with an overall understanding of the language features and how they work.
On Lisp is a comprehensive study of advanced Lisp techniques, with bottom-up programming as the unifying theme. It gives the first complete description of macros and macro applications. The book also covers important subjects related to bottom-up programming, including functional programming, rapid prototyping, interactive development, and embedded languages.
How to understand and use Common Lisp.
Interviews with Common Lisp programmers.
Lisp Web Tales
Develop Web applications in Common Lisp.
Common Lisp Recipes
Find solutions to problems and answers to questions you are likely to encounter when writing real-world applications in Common Lisp. This book covers areas as diverse as web programming, databases, graphical user interfaces, integration with other programming languages, multi-threading, and mobile devices as well as debugging techniques and optimization, to name just a few.
Land of Lisp
Learn to Program in Lisp, One Game at a Time!
A comprehensive guide to writing efficient programs with examples in Lisp.
Let Over Lambda - 50 Years of Lisp
Let Over Lambda is one of the most hardcore computer programming books out there. Starting with the fundamentals, it describes the most advanced features of the most advanced language: COMMON LISP. The point of this book is to expose you to ideas that you might otherwise never be exposed to.
Loving Common Lisp, or the Savvy Programmer's Secret Weapon
The purpose of this book is to provide a quick introduction to Common Lisp and then provide the user with many fun and useful examples for using Common Lisp. The author has used Common Lisp professionally since 1982..
Look here for a more complete list of books.
ANSI Common Lisp Specification
If you need help, get in contact via the Lisp mailing lists and IRC.