The most helpful content here is the "list of the 52 most important lessons in PAIP" near the end. Despite the title of the book, many of these lessons are not

The most helpful content here is the "list of the 52 most important lessons in PAIP" near the end. Despite the title of the book, many of these lessons are not just about AI, or even particularly about symbolic programming or Lisp. They are generally useful advice about programming.