I suggest that you use this book as a reference. The detailed Table of Contents will help you find subject areas that appeal to your interests or needs. You can learn a lot about Lisp, its development environment, and its use by reading through the chapters in order and working out an occasional bit of code on paper, to check your understanding. I've tried hard to introduce the fundamentals of Lisp in a way that doesn't belabor the details of internal representation. This book may not be reproduced without the written consent of its author.
Online distribution is restricted to the author's site.