I can highly recommend this book! I even own a signed copy :)

There are many other great Lisp books, but this has been written in more recent times by an author who has before written books about other languages, e.g. Java. As a consequence, I think it is much more hands-on and easygoing for people who had learned some of the mainstream languages first and the examples are also more of this age.

It is an excellent and thorough introduction into the language and in contrast to many older books also has very valuable sections about OOP and condition handling.